https://www.explainxkcd.com/wiki/api.php?action=feedcontributions&feedformat=atom&user=Ianonavy 2026-05-15T19:29:33Z User contributions MediaWiki 1.30.0 https://www.explainxkcd.com/wiki/index.php?title=1237:_QR_Code&diff=43551 2013-07-12T05:06:26Z

<p>Ianonavy: typo</p> <hr /> <div>{{comic<br /> | number = 1237<br /> | date = July 12, 2013<br /> | title = QR Code<br /> | image = qr code.png<br /> | titletext = Remember, the installer is watching the camera for the checksum it generated, so you have to scan it using your own phone.<br /> }}<br /> <br /> ==Explanation==<br /> [http://en.wikipedia.org/wiki/QR_code| QR codes] are a type of 2D barcode that can be scanned using mobile app on a smartphone. This comic illustrates a user installing a new mobile application that requires the smartphone to scan a QR code on its own screen. Even with two mirrors or a front-facing camera and mirror, most smartphones would be unable to simultaneously display the camera feed for the QR scanner and the QR code itself.<br /> <br /> Incidentally, the QR code in the comic contains a link to a nearly identical image with a slightly change caption that reads &quot;How to trap a webcomic reader in an infinite loop&quot;.<br /> <br /> ==Transcript==<br /> :To continue installing,<br /> :[image of a QR code with link to http://xkcd.com/1237/scan/]<br /> :scan this code.<br /> :12<br /> :seconds remaining<br /> :How to freak out a mobile app user<br /> {{comic discussion}}</div>

Ianonavy https://www.explainxkcd.com/wiki/index.php?title=1237:_QR_Code&diff=43550 2013-07-12T04:51:53Z

<p>Ianonavy: </p> <hr /> <div>{{comic<br /> | number = 1237<br /> | date = July 12, 2013<br /> | title = QR Code<br /> | image = qr code.png<br /> | titletext = Remember, the installer is watching the camera for the checksum it generated, so you have to scan it using your own phone.<br /> }}<br /> <br /> ==Explanation==<br /> [http://en.wikipedia.org/wiki/QR_code| QR codes] are a type of 2D barcode that can be scanned using mobile app on a smartphone. This comic illustrates a user installing a new mobile application that requires the smartphone to scan a QR code own screen. Even with two mirrors or a front-facing camera and mirror, most smartphones would be unable to simultaneously display the camera feed for the QR scanner and the QR code itself.<br /> <br /> Incidentally, the QR code in the comic contains a link to a nearly identical image with a slightly change caption that reads &quot;How to trap a webcomic reader in an infinite loop&quot;.<br /> <br /> ==Transcript==<br /> :To continue installing,<br /> :[image of a QR code with link to http://xkcd.com/1237/scan/]<br /> :scan this code.<br /> :12<br /> :seconds remaining<br /> :How to freak out a mobile app user<br /> {{comic discussion}}</div>

Ianonavy