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nycki<p>I don't have the energy to do a proper writeup right now but the code for qrplay is complete: <a href="https://codeberg.org/nupanick/qrplay" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">codeberg.org/nupanick/qrplay</span><span class="invisible"></span></a></p><p>this is an app by <span class="h-card" translate="no"><a href="https://fe.disroot.org/users/SArpnt" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>SArpnt</span></a></span> and myself. it generates a QR code. when scanned, the QR code contains the full text of a website, in a format you can copy and paste directly into your URL bar. that website contains a JavaScript app that plays the musical notes of your choice, using an easy to edit text format.</p><p>tl;dr: chiptunes on business cards. go wild.</p><p>edit: comments appreciated! did you print one of these?</p><p><a href="https://bark.lgbt/tags/programming" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>programming</span></a> <a href="https://bark.lgbt/tags/music" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>music</span></a> <a href="https://bark.lgbt/tags/demo" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>demo</span></a> <a href="https://bark.lgbt/tags/barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>barcode</span></a></p>
Marcel SIneM(S)US<p>140 Punkte (Ø 69 Punkte)<br>Sie haben mehr Punkte erreicht als 93% der Teilnehmer</p><p>Manchmal war der Finger schneller als das Gehirn 😅 </p><p><a href="https://social.tchncs.de/tags/TGIQF" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TGIQF</span></a>: Das Nerdquiz rund um den <a href="https://social.tchncs.de/tags/Barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Barcode</span></a> | heise online <a href="https://www.heise.de/news/TGIQF-Das-Nerdquiz-rund-um-den-Barcode-10462384.html" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">heise.de/news/TGIQF-Das-Nerdqu</span><span class="invisible">iz-rund-um-den-Barcode-10462384.html</span></a></p>
Wesley Moore<p>New favourite way to transfer awkward strings between computers. *beep*</p><p><a href="https://mastodon.decentralised.social/tags/qrcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>qrcode</span></a> <a href="https://mastodon.decentralised.social/tags/barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>barcode</span></a></p>
tjhowse<p>I've just typed up the details on my wireless <a href="https://howse.social/tags/grocy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>grocy</span></a> <a href="https://howse.social/tags/barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>barcode</span></a> scanner project:</p><p><a href="https://github.com/tjhowse/wireless_grocy_barcode_scanner" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="ellipsis">github.com/tjhowse/wireless_gr</span><span class="invisible">ocy_barcode_scanner</span></a></p>
tjhowse<p>I recorded a quick video showing how I tapped into the power and data inside the barcode scanner to interface to the <a href="https://howse.social/tags/esp32" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>esp32</span></a> running <a href="https://howse.social/tags/esphome" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>esphome</span></a>. I'm working on some QoL tweaks to improve the interface to <a href="https://howse.social/tags/grocy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>grocy</span></a> to allow for more use-cases.</p><p>I also clipped the pins down a bit so the whole thing is a bit more compact.</p><p>Once the esphome code is a bit less shameful I'll post it on github.</p><p><a href="https://youtu.be/B08wy_exyug" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="">youtu.be/B08wy_exyug</span><span class="invisible"></span></a></p><p><a href="https://howse.social/tags/homeassistant" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>homeassistant</span></a> <a href="https://howse.social/tags/automation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>automation</span></a> <a href="https://howse.social/tags/barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>barcode</span></a></p>
Roshun ShahNature made<br> <br> <a href="https://pixelfed.social/discover/tags/barcode?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#barcode</a> <a href="https://pixelfed.social/discover/tags/saomiguel?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#saomiguel</a> <a href="https://pixelfed.social/discover/tags/moss?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#moss</a> <a href="https://pixelfed.social/discover/tags/mossyforest?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#mossyforest</a> <a href="https://pixelfed.social/discover/tags/forest?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#forest</a> <a href="https://pixelfed.social/discover/tags/nature?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#nature</a> <a href="https://pixelfed.social/discover/tags/portugal?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#portugal</a> <a href="https://pixelfed.social/discover/tags/azores?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#azores</a> <a href="https://pixelfed.social/discover/tags/travel?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#travel</a> <a href="https://pixelfed.social/discover/tags/photography?src=hash" class="u-url hashtag" rel="nofollow noopener" target="_blank">#photography</a>
IT News<p>Binner Makes Workshop Parts Organization Easy - We’ve all had times where we knew we had some part but we had to go searching for ... - <a href="https://hackaday.com/2025/04/16/binner-makes-workshop-parts-organization-easy/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hackaday.com/2025/04/16/binner</span><span class="invisible">-makes-workshop-parts-organization-easy/</span></a> <a href="https://schleuss.online/tags/componentstorage" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>componentstorage</span></a> <a href="https://schleuss.online/tags/organization" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>organization</span></a> <a href="https://schleuss.online/tags/homehacks" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>homehacks</span></a> <a href="https://schleuss.online/tags/database" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>database</span></a> <a href="https://schleuss.online/tags/workshop" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>workshop</span></a> <a href="https://schleuss.online/tags/barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>barcode</span></a> <a href="https://schleuss.online/tags/parts" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>parts</span></a></p>
apgw<p><span class="h-card" translate="no"><a href="https://social.bund.de/@bmdv" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>bmdv</span></a></span></p><p>Antworten Sie hier, oder postet der <a href="https://bunt.social/tags/BMDV" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>BMDV</span></a>-<a href="https://bunt.social/tags/Bot" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Bot</span></a>?</p><p>Haben sie nochmal die Zahlen, wie viele Millionen Menschen <a href="https://bunt.social/tags/Chipkarte" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Chipkarte</span></a> nutzen, statt <a href="https://bunt.social/tags/App" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>App</span></a>-<a href="https://bunt.social/tags/Ticket" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Ticket</span></a>?</p><p>Warum gibts bei <a href="https://bunt.social/tags/Bahncard" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Bahncard</span></a> neu ausgedruckt erlaubtes <a href="https://bunt.social/tags/digitale" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>digitale</span></a> PDF-Ticket nicht auch beim <a href="https://bunt.social/tags/Dticket" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Dticket</span></a>-<a href="https://bunt.social/tags/Semesterticket" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Semesterticket</span></a>? <a href="https://bunt.social/tags/Appzwang" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Appzwang</span></a> schließt Menschen aus.</p><p><a href="https://bunt.social/tags/Digitalisierung" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Digitalisierung</span></a> MUSS inklusiv sein, und alle mitnehmen in <a href="https://bunt.social/tags/Bus" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Bus</span></a> und <a href="https://bunt.social/tags/Bahn" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Bahn</span></a>: Gern im Hintergrund <a href="https://bunt.social/tags/digital" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>digital</span></a>, aber für Nutzer*innen sind "alte" Medien wie PDF + Papier-Option mit <a href="https://bunt.social/tags/Barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Barcode</span></a> besser.</p>
apgw<p>Leider setzen auch (teil-)kommunale Unternehmen wie die <a href="https://bunt.social/tags/Stadtwerke" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Stadtwerke</span></a> <a href="https://bunt.social/tags/Osnabr%C3%BCck" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Osnabrück</span></a> auf digitalen Firlefanz von <a href="https://bunt.social/tags/highQ" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>highQ</span></a> (<a href="https://www.highq.de/unternehmen#c1564" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">highq.de/unternehmen#c1564</span><span class="invisible"></span></a>). </p><p>Einfacher, günstiger <a href="https://bunt.social/tags/%C3%96PNV" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ÖPNV</span></a> für Alle muss auch ohne <a href="https://bunt.social/tags/App" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>App</span></a> funktionieren!</p><p>Statt <a href="https://bunt.social/tags/Appzwang" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Appzwang</span></a> braucht es z.B. barrierarme Tickets auf Papier. Das Ausdruckverbot für <a href="https://bunt.social/tags/Semesterticket" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Semesterticket</span></a>-<a href="https://bunt.social/tags/Barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Barcode</span></a> muss weg!</p><p>Möglichst unkomplizierte <a href="https://bunt.social/tags/Teilhabe" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Teilhabe</span></a> und <a href="https://bunt.social/tags/Mobilit%C3%A4t" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Mobilität</span></a> für Alle, ohne physische und digitale Barrieren, ist das Ziel:</p><p><a href="https://bunt.social/tags/Menschlichkeit" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Menschlichkeit</span></a> first, statt <a href="https://bunt.social/tags/DigitalOnly" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DigitalOnly</span></a>!</p><p>6/6</p>
apgw<p>Durch <a href="https://bunt.social/tags/Appzwang" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Appzwang</span></a> bei <a href="https://bunt.social/tags/Semesterticket" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Semesterticket</span></a> und <a href="https://bunt.social/tags/Deutschlandticket" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Deutschlandticket</span></a> oder aufwändig zu verwaltenden, fehleranfälligen Funk-<a href="https://bunt.social/tags/Chipkarten" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Chipkarten</span></a> dafür ("<a href="https://bunt.social/tags/DigitalOnly" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DigitalOnly</span></a>"), sind viele neue Probleme für Nutzer*innen des <a href="https://bunt.social/tags/%C3%96PNV" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ÖPNV</span></a> entstanden.</p><p>Mit Apps von <a href="https://bunt.social/tags/highQ" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>highQ</span></a> (<a href="https://www.highq.de/mobilitaetsloesungen/effizienztools/protraq" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">highq.de/mobilitaetsloesungen/</span><span class="invisible">effizienztools/protraq</span></a>) können auch ansonsten digitalen Themen aufgeschlossen gegenüberstehende <a href="https://bunt.social/tags/Studierende" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Studierende</span></a> schneller als <a href="https://bunt.social/tags/Schwarzfahrer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Schwarzfahrer</span></a>*innen beschuldigt werden, nachdem funktionierendes <a href="https://bunt.social/tags/Barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Barcode</span></a>-<a href="https://bunt.social/tags/Papier" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Papier</span></a>-<a href="https://bunt.social/tags/Semesterticket" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Semesterticket</span></a> von der Bundespolitik verboten wurde.</p><p>3/x</p>
Daniel Schildt<p>Barcode scanners as musical instruments in Japan: <a href="https://www.youtube.com/watch?v=iSq3y1WzfK0" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=iSq3y1WzfK</span><span class="invisible">0</span></a></p><p><a href="https://mementomori.social/tags/YouTube" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>YouTube</span></a> <a href="https://mementomori.social/tags/music" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>music</span></a> <a href="https://mementomori.social/tags/barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>barcode</span></a> <a href="https://mementomori.social/tags/hardware" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hardware</span></a></p>
Mark<p>The End of Privacy in Public campaign</p><p>Demand your MP find out if <a href="https://mastodon.scot/tags/dystopian" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>dystopian</span></a> <a href="https://mastodon.scot/tags/FacialRecognition" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FacialRecognition</span></a> is deployed in your local area</p><p>We’re facing the end of <a href="https://mastodon.scot/tags/privacy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>privacy</span></a> because of unchecked rise of facial recognition in public spaces, shops, pubs</p><p>Your face will become:</p><p>- An <a href="https://mastodon.scot/tags/ID" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ID</span></a> card<br>- A <a href="https://mastodon.scot/tags/fingerprint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fingerprint</span></a><br>- A <a href="https://mastodon.scot/tags/QR" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>QR</span></a> code &amp; <a href="https://mastodon.scot/tags/barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>barcode</span></a> all combined</p><p>All to be monitored by your local council, the Home Office, the police, even the owner of your local <a href="https://mastodon.scot/tags/CornerShop" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CornerShop</span></a>.</p><p><a href="https://action.privacyinternational.org/node/140" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">action.privacyinternational.or</span><span class="invisible">g/node/140</span></a></p><p><a href="https://mastodon.scot/tags/Orwellian" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Orwellian</span></a> <a href="https://mastodon.scot/tags/UK" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>UK</span></a> <a href="https://mastodon.scot/tags/PoliceState" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PoliceState</span></a></p>
IT News<p>The Barcode Beast Likes Your CDs - Over the years we’ve featured many projects which attempt to replicate the feel of... - <a href="https://hackaday.com/2024/11/19/the-barcode-beast-likes-your-cds/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hackaday.com/2024/11/19/the-ba</span><span class="invisible">rcode-beast-likes-your-cds/</span></a> <a href="https://schleuss.online/tags/homehacks" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>homehacks</span></a> <a href="https://schleuss.online/tags/barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>barcode</span></a> <a href="https://schleuss.online/tags/pipicow" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pipicow</span></a> <a href="https://schleuss.online/tags/mqtt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mqtt</span></a></p>
Dom<p>This is so interesting! The history of the barcode (or UPC code).. and subsequently, the QR code! </p><p>The "Mark of the Beast"! 🤣🤣🤣<br>Some people are so afraid of the world around them that they see religious symbols everywhere! 🙄</p><p><a href="https://mstdn.ca/tags/technology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>technology</span></a> <a href="https://mstdn.ca/tags/QR" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>QR</span></a> <a href="https://mstdn.ca/tags/barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>barcode</span></a> </p><p><a href="https://www.bbc.com/future/article/20241018-barcodes-at-75-how-black-and-white-lines-went-into-space-and-stoked-fears-of-the-antichrist" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">bbc.com/future/article/2024101</span><span class="invisible">8-barcodes-at-75-how-black-and-white-lines-went-into-space-and-stoked-fears-of-the-antichrist</span></a></p>
David August ❌👑<p>The Norwegian Navy is considering painting bar codes on the side of all their surface vessels this week. When asked why, Norway’s Ministry of Defense said: when their ships return to port they’ll be able to Scandinavian. </p><p>- written by me for tonight's This Week This Week in LA, you can come see it. </p><p><a href="https://mastodon.online/tags/LosAngeles" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>LosAngeles</span></a> <a href="https://mastodon.online/tags/LA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>LA</span></a> <a href="https://mastodon.online/tags/satire" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>satire</span></a> <a href="https://mastodon.online/tags/joke" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>joke</span></a> <a href="https://mastodon.online/tags/funny" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>funny</span></a> <a href="https://mastodon.online/tags/comedy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>comedy</span></a> <a href="https://mastodon.online/tags/sketch" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sketch</span></a> <a href="https://mastodon.online/tags/SketchComedy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SketchComedy</span></a> <a href="https://mastodon.online/tags/ComedyWriter" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ComedyWriter</span></a> <a href="https://mastodon.online/tags/writer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>writer</span></a> <a href="https://mastodon.online/tags/screeenwriter" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>screeenwriter</span></a> <a href="https://mastodon.online/tags/screenwriting" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>screenwriting</span></a> <a href="https://mastodon.online/tags/norwegian" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>norwegian</span></a> <a href="https://mastodon.online/tags/navy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>navy</span></a> <a href="https://mastodon.online/tags/barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>barcode</span></a> <a href="https://mastodon.online/tags/scan" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>scan</span></a> <a href="https://mastodon.online/tags/pun" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pun</span></a> <a href="https://mastodon.online/tags/DadJoke" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DadJoke</span></a></p>
rita<p>Wer kann sich gut an einen selbst oder einen in eurer Anwesenheit getätigten <a href="https://ieji.de/tags/Einkauf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Einkauf</span></a> erinnern, der vor dem 3.10.1990 noch in der <a href="https://ieji.de/tags/DDR" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DDR</span></a> stattgefunden hat und bei dem beim bezahlen ein <a href="https://ieji.de/tags/Strichcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Strichcode</span></a> bzw. <a href="https://ieji.de/tags/Barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Barcode</span></a> eingelesen wurde oder wo zumindest an irgendeiner sichtbaren Stelle einer vorhanden war?</p><p>Was war das für ein Gut? Wo gab es das (<a href="https://ieji.de/tags/Konsum" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Konsum</span></a>, <a href="https://ieji.de/tags/Handelsorganisation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Handelsorganisation</span></a>, ...)?</p><p>Mit Weiterleitungen an Freund_innen, Bekannte und Verwandte wäre mir auch geholfen. <a href="https://ieji.de/tags/boostok" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>boostok</span></a> :BoostOK: <span class="h-card" translate="no"><a href="https://a.gup.pe/u/askfedi_de" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>askfedi_de</span></a></span> Danke! 🙂</p>
Thomas Tanghus<p><span class="h-card" translate="no"><a href="https://mstdn.ca/@dbattistella" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>dbattistella</span></a></span> Indeed. I have read that if the first three numbers of a products <a href="https://freeradical.zone/tags/barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>barcode</span></a> is 729 (I think) it's either im- or export of Israel. Not sure if it's reliable</p>
Erik van Straten<p>To answer my own question: the barcode (actually a 2D QR-like code) appears to use some kind of TOTP [1] mechanism, as used by apps such as Google Authenticator, Twilio Authy and Microsoft Authenticator.</p><p>Effectively, a ticket is some big number (probably randomly created by the server) that only computers get to know; it is a "shared secret", aka a "seed".</p><p>If you use the Ticketmaster app, such a number will be stored on your phone (and on their server).</p><p>If you use their *webserver* to generate your barcode at the entrance of the event, that number is retrieved by the webserver from the ticketing server, after you've logged on to the website (each of your "tickets", those big numbers, are tied to your Ticketmaster web account).</p><p>Every 15 seconds that "seed" number is, *combined* with the current date and time, "hashed" (*) to generate a new, semi-random, number (either by the app on your phone or by the Ticketmaster webserver). *THAT* resulting number is used to create the barcode, and therefore it will look entitely different every 15 seconds.</p><p>(*) Using cryptography: a kind of blending that will always create the same result if the input is the same - but in such a way that (assuming long, impossible to guess inputs) you cannot retrieve the input from the output; cryptographic hash functions are *one-way* algorithms.</p><p>Important note: TOTP apps also use barcodes, but for an entirely *different* purpose - that is, to transfer the -static- shared secret (seed) from the server to the 2FA Authenticator app on your phone. That barcode is comparable to your password: if a thief can steal *such* a "second factor" barcode, they only need your user ID and password to access your "MFA protected" account.</p><p>So, Ticketmaster is right: there's no risk of "ticket loss" for their customers if the attackers only copied *barcodes*.</p><p>HOWEVER: the remaining, IMO fundamental, question is: did the cybercriminals *also* manage to copy the big random numbers, the "seeds" that *statically* represent the tickets?</p><p><span class="h-card" translate="no"><a href="https://infosec.exchange/@BleepingComputer" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>BleepingComputer</span></a></span> <span class="h-card" translate="no"><a href="https://infosec.exchange/@lawrenceabrams" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>lawrenceabrams</span></a></span> </p><p>[1] <a href="https://www.protectimus.com/blog/totp-algorithm-explained/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">protectimus.com/blog/totp-algo</span><span class="invisible">rithm-explained/</span></a> (I particularly liked this image from that page: <a href="https://www.protectimus.com/blog/wp-content/uploads/2020/06/TOTP-algorithm-explained.png" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">protectimus.com/blog/wp-conten</span><span class="invisible">t/uploads/2020/06/TOTP-algorithm-explained.png</span></a>)</p><p><a href="https://infosec.exchange/tags/Ticketmaster" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Ticketmaster</span></a> <a href="https://infosec.exchange/tags/Breach" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Breach</span></a> <a href="https://infosec.exchange/tags/TOTP" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TOTP</span></a> <a href="https://infosec.exchange/tags/AuthenticatorApps" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AuthenticatorApps</span></a> <a href="https://infosec.exchange/tags/Seeds" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Seeds</span></a> <a href="https://infosec.exchange/tags/Swifties" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Swifties</span></a> <a href="https://infosec.exchange/tags/Concerts" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Concerts</span></a> <a href="https://infosec.exchange/tags/BarCodes" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>BarCodes</span></a> <a href="https://infosec.exchange/tags/QRCodes" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>QRCodes</span></a> <a href="https://infosec.exchange/tags/Concert" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Concert</span></a> <a href="https://infosec.exchange/tags/BarCode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>BarCode</span></a> <a href="https://infosec.exchange/tags/QRCode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>QRCode</span></a></p>
tagesschau<p>Hat der klassische Barcode 50 Jahre nach Einführung ausgedient?</p><p>Mit einer Packung Kaugummi ging es los: Vor 50 Jahren wurde an einer Supermarktkasse zum ersten Mal ein Barcode gescannt. Das System hat den Handel revolutioniert. Schon bald aber könnte der Strichcode abgelöst werden. Von Jens Eberl.</p><p>➡️ <a href="https://www.tagesschau.de/wirtschaft/verbraucher/barcode-50-jahre-supermarkt-kasse-scanner-100.html?at_medium=mastodon&amp;at_campaign=tagesschau.de" rel="nofollow noopener" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">tagesschau.de/wirtschaft/verbr</span><span class="invisible">aucher/barcode-50-jahre-supermarkt-kasse-scanner-100.html?at_medium=mastodon&amp;at_campaign=tagesschau.de</span></a></p><p><a href="https://ard.social/tags/Barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Barcode</span></a> <a href="https://ard.social/tags/Einzelhandel" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Einzelhandel</span></a> <a href="https://ard.social/tags/Supermarkt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Supermarkt</span></a></p>
Vladimir Savić<p>The first <a href="https://mastodon.social/tags/barcode" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>barcode</span></a> was scanned on June 26th 1974 in a Marsh store in Troy, Ohio. <a href="https://mastodon.social/tags/OTD" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>OTD</span></a></p>