How do QR Codes Work? Features, Format, Error Correction, and More!

Quick Response codes (QR codes) are commonplace. They are highly recognizable and easy to use. But what is the format of that magic square? How do QR codes work? How are QR codes made? Why can you put a logo in the middle of a QR code? Please, let me explain! --- QR code security: https://www.researchgate.net/publication/221593120_QR_code_security Twitter: https://twitter.com/garyexplains Instagram: https://www.instagram.com/garyexplains/ #garyexplains