barcodes
No strong matches for “barcodes”. Here are the closest videos.
35:13I built a QR code with my bare hands to see how it works
9.7M views • 2 years ago
Veritasium
Veritasium builds a QR code by hand to explain how it works. It covers the history of Morse code and barcodes, how QR codes encode data, why damaged codes still scan, and how safe they are.
43:40DEF CON 29 - Richard Henderson - Old MacDonald Had a Barcode, E I E I CAR
18K views • 5 years ago
DEFCONConference
A DEF CON 29 talk by Richard Henderson about encoding the EICAR antivirus test string into QR codes and barcodes and scanning them at real systems. Many systems that do not expect such input misbehave or collapse, including a parking garage system.