How QR codes work and why some people are afraid of them #SoME3

Video entry for the SoME3 competition. Special thanks to Tatiana Pyanykh and Tahmidt for the script review. CONTACTS --------------------------------------------------- Site: https://sortofschool.org/ Twitter: https://twitter.com/sortofschool Instagram: https://www.instagram.com/sortofschool/ Github: https://github.com/sokolov-teach E-mail: [email protected] PATREON: https://www.patreon.com/sortofschool ADDITIONAL RESOURCES --------------------------------------------------- Error Correction Coding in Galois fields by Thonky: https://www.thonky.com/qr-code-tutorial/error-correction-coding Format and Version Information Encoding by Thonky: https://www.thonky.com/qr-code-tutorial/format-version-information Reed-Solomon Error Correcting Codes from the Bottom Up by tomverbeure: https://tomverbeure.github.io/2022/08/07/Reed-Solomon.html What are Reed-Solomon Codes by vcubingx: https://www.youtube.com/watch?v=1pQJkt7-R4Q IMAGE ATTRIBUTION --------------------------------------------------- shop cart by Kristina Margaryan from Noun Project (CC BY 3.0) https://thenounproject.com/icon/shop-cart-2536505/ Restaurant by Manaqib S from Noun Project (CC BY 3.0) https://thenounproject.com/icon/restaurant-1721649/ Bus by Chanut is Industries from Noun Project (CC BY 3.0) https://thenounproject.com/icon/bus-1106092/ Document by Rokhman Kharis from Noun Project (CC BY 3.0) https://thenounproject.com/icon/document-5874836/ B Escorial 108v.jpg by Real Biblioteca de San Lorenzo (Public Domain) bull by CAMB from Noun Project (CC BY 3.0) https://thenounproject.com/icon/bull-4212169/ Book of Revelation by King James (Public Domain) Godot logo (CC BY 4.0) Python Logo (PSF Trademark Usage Policy) The style of the video was inspired by "The First Video Game by Ahoy." https://www.youtube.com/watch?v=uHQ4WCU1WQc AUDIO ATTRIBUTION --------------------------------------------------- Roundup on the Prairie by Aaron Kenny (YouTube Audio Library License) Church Bell Celebration by Doug Maxwell (YouTube Audio Library License) Dramatic Swarm by Doug Maxwell (YouTube Audio Library License) Lost In Prayer by Doug Maxwell (YouTube Audio Library License) Wild Fires by Doug Maxwell (YouTube Audio Library License) Length of Light by Amulets(YouTube Audio Library License) The Curious Kitten by Aaron Kenny (YouTube Audio Library License) No.7 Alone With My Thoughts by Esther Abrami (YouTube Audio Library License) Un Requited Love by Sir Cubworth (YouTube Audio Library License) The Plan's Working by Cooper Cannell (YouTube Audio Library License) Frozen Star Kevin MacLeod (incompetech.com) (CC BY 3.0) Americana - Aspiring by Kevin MacLeod (incompetech.com) (CC BY 4.0) Screaming Hawk by PsychoBird (CC BY 3.0) CHAPTERS --------------------------------------------------- 0:00 Intro 1:15 Wild comment section 2:24 Book of Revelation 3:38 Basic patterns 5:58 Modes of encoding 6:29 Byte mode 10:49 Numeric mode 12:50 Alphanumeric mode 14:50 Error Correction Level 16:00 Pad characters 18:50 Reed-Solomon error correction 22:43 Reed-Solomon in Galois Fields 25:56 Masks 28:50 Format bits 32:17 Conclusion