Doing it right

FIDO is a standard certified by the nonprofit FIDO Alliance that supports public key cryptography and multifactor authentication, specifically the Universal Authentication Framework (UAF) and Universal Second Factor (U2F) protocols. When you register a FIDO device with an online service, it creates a key pair: an on-device, offline private key, and an online public key. During authentication, the device “proves possession” of the private key by prompting you to enter a PIN code or password or supply a fingerprint or speak into a microphone.

This leads to our intelligent cash card.