# QR Codes ## Overview _A QR code (abbreviated from Quick Response code) is a type of matrix barcode (or two-dimensional code) first designed for the automotive industry. More recently, the system has become popular outside of the industry due to its fast readability and comparatively large storage capacity. The code consists of black modules arranged in a square pattern on a white background. The information encoded can be made up of four standardized kinds ("modes") of data (numeric, alphanumeric, byte/binary, Kanji), or by supported extensions virtually any kind of data -_ [wikipedia.org/wiki/QR\_code](https://www.adafruit.com/wikipedia.org/wiki/QR_code) ## [Anatomy of a QR code](http://www.qrme.co.uk/qr-code-resources/understanding-a-qr-code.html) ![](https://cdn-learn.adafruit.com/assets/assets/000/101/722/medium800/camera_anatomy-qr.png?1619024138) [QR Code Costume](http://www.cockeyed.com/incredible/qr/qr_code.shtml) ![camera_qr_code14.jpg](https://cdn-learn.adafruit.com/assets/assets/000/101/723/medium640/camera_qr_code14.jpg?1619024240) The first [QR code scarf](http://lendorff.kaywa.com/) by the same folks who made the Kaywa generator mentioned above ![camera_lendorff-kaywa-scarf.jpg](https://cdn-learn.adafruit.com/assets/assets/000/101/724/medium640/camera_lendorff-kaywa-scarf.jpg?1619024281) [QR code motif](http://www.local-guru.net/blog/2009/06/29/qr-code-carpet) encoded with the weaver's name - a digitally readable "signature" for woven rugs, etc. ![camera_qr-ruglette.jpg](https://cdn-learn.adafruit.com/assets/assets/000/101/725/medium640/camera_qr-ruglette.jpg?1619024308) Kyle Trowbridge's [_The Politics of Time_](http://dorschgallery.com/exhibitions/details/163/) exhibition of QR-inspired paintings ![camera_qr-paintings-kyle-trowbridge.jpg](https://cdn-learn.adafruit.com/assets/assets/000/101/727/medium640/camera_qr-paintings-kyle-trowbridge.jpg?1619024744) https://www.youtube.com/watch?v=64in_yApB2Q [Audi Japan's QR code advertisement](https://www.youtube.com/watch?v=64in_yApB2Q) [WTF QR codes](http://wtfqrcodes.com/) is a fun blog "celebrating the ridiculousness that is QR codes." ![camera_shaved-qr.jpg](https://cdn-learn.adafruit.com/assets/assets/000/101/728/medium640/camera_shaved-qr.jpg?1619024851) [Perler bead QR sign](https://www.flickr.com/photos/14112399@N00/6854866586) ![camera_perler-bead-qr.jpg](https://cdn-learn.adafruit.com/assets/assets/000/101/729/medium640/camera_perler-bead-qr.jpg?1619024946) ![](https://cdn-learn.adafruit.com/assets/assets/000/101/730/medium800/camera_qr-badge-sticker.jpg?1619024972) Adafruit offers QR codes on an [iron-on badge](http://www.adafruit.com/products/655) and a [glossy vinyl sticker](http://www.adafruit.com/products/707) as part of our fun and exciting way to celebrate achievement for electronics, science and engineering. We believe everyone should be able to be rewarded for learning a useful skill, a badge is just one of the many ways to show and share. You can also download Adam Kemp's [QR skill badge requirements doc](https://docs.google.com/document/d/1DsYp0ABMtzqgQi8YAzY-VHg-e8VzAS5llwb5H3a03JI/edit) at the [Adafruit Academy](http://adafruit.com/academy) to easily guide your students to earning this badge! ## Featured Products ### QR Code - Sticker! [QR Code - Sticker!](https://www.adafruit.com/product/707) QR codes! You learned how to make them and use them! The sticker itself is a QR code too! Adafruit offers a fun and exciting stickers to celebrate achievement for electronics, science and engineering. We believe everyone should be able to be rewarded for learning a useful skill, a badge is... No Longer Stocked [Buy Now](https://www.adafruit.com/product/707) [Related Guides to the Product](https://learn.adafruit.com/products/707/guides) ### QR Code - Skill badge, iron-on patch [QR Code - Skill badge, iron-on patch](https://www.adafruit.com/product/655) QR codes! You learned how to make them and use them! The badge itself is a QR code too! Adafruit offers a fun and exciting "badges" of achievement for electronics, science and engineering. We believe everyone should be able to be rewarded for learning a useful skill, a badge is just... No Longer Stocked [Buy Now](https://www.adafruit.com/product/655) [Related Guides to the Product](https://learn.adafruit.com/products/655/guides) ## Related Guides - [All About Raspberry Pi HQ Camera Lenses](https://learn.adafruit.com/raspberry-pi-hq-camera-lenses.md) - [Thermal Camera with Display](https://learn.adafruit.com/thermal-camera-with-display.md) - [BLE Cat Thermal Printer with MEMENTO](https://learn.adafruit.com/ble-cat-thermal-printer-with-memento.md) - [Adafruit AMG8833 8x8 Thermal Camera Sensor](https://learn.adafruit.com/adafruit-amg8833-8x8-thermal-camera-sensor.md) - [Coffee Rater](https://learn.adafruit.com/coffee-rater.md) - [DIY WiFi Raspberry Pi Touchscreen Camera](https://learn.adafruit.com/diy-wifi-raspberry-pi-touch-cam.md) - [PiGlass](https://learn.adafruit.com/piglass-wearable-raspberry-pi-computer.md) - [Automatic Naughty Cat Detector using Lobe](https://learn.adafruit.com/naughty-cat-detector-using-microsoft-lobe.md) - [Monitor Your Home With the Raspberry Pi B+](https://learn.adafruit.com/monitor-your-home-with-the-raspberry-pi-b-plus.md) - [Build an ML Package Detector with Lobe](https://learn.adafruit.com/build-an-ml-package-detector.md) - [Pixy Pet Robot - Color vision follower](https://learn.adafruit.com/pixy-pet-robot-color-vision-follower-using-pixycam.md) - [Set up Web Workflow on the Adafruit MEMENTO](https://learn.adafruit.com/set-up-web-workflow-on-the-adafruit-memento.md) - [Facial Detection and Recognition with MEMENTO](https://learn.adafruit.com/facial-detection-and-recognition-with-memento.md) - [3D Printed Pi Camera Case and Tripod](https://learn.adafruit.com/3d-printed-pi-camera-case-and-tripod.md) - [Raspberry Pi SelfieBlock](https://learn.adafruit.com/selfieblock.md)