Heh, this got me thinking of the feasibility of cryptographically signed, err.. signs. A QR code can hold 2953 bytes of binary information, so more than enough

Heh, this got me thinking of the feasibility of cryptographically signed, err.. signs. A QR code can hold 2953 bytes of binary information, so more than enough for a 2048 bit public key. Same code can also hold 4296 bytes alphanumeric, which would be sufficient for even a decently long message and its associated signature. A government could post the fingerprint of their key on a site, and post a QR codes containing a signed message about the sign on the sign itself. Like so: https://imgur.com/a/fWZpt https://imgur.com/a/fWZpt Sign sign sign. Got some semantic saturation happening now. Sounds somewhat absurd, but definitely feasible for homeland-security-type things like this random box.