QR Code

Full Title or Meme

A QR Code is just a specific two dimensal extension of a bar code.

Context

• Used on Web Sites and physical sites to carry URLs and similar encoded Identifiers.
• Is not proposed as a cure-all for places where fully digital transmission of information is not trusted or not possible, or as a fall back for digital device not functioning correctly.
• It is often proposed as a solution to digital exchanges where a radio signal is not possible.

Problems

• A report by Vint Cerf
• A 2022-01-22 phishing scam to watch out for: fraudulent QR codes on parking meters
• See other attacks on the wiki page Wallet#QR Codes.