User @astrra.space has proposed the concept of a secure, wireless authentication token by using a smartphone as a substitute for a hardware key like a YubiKey. The proposed system would store SSH/PGP keys in a secure enclave on a companion phone app, communicating with a host computer over the network. This would effectively turn a device like a GrapheneOS phone into a wireless hardware token, offering a convenient and potentially more accessible alternative to dedicated hardware keys. The proposal has generated discussion on Bluesky, with users exploring the potential security implications and implementation challenges.