Location-based security is ensured by using quantum mechanics
A research group led by computer scientists at the UCLA Henry Samueli School of Engineering and Applied Science has proved that cryptography — the practice and study of hiding information — that is based solely on physical location is possible by using quantum mechanics.
Such a method, the researchers say, allows one to encrypt and decrypt data at a secure location without pre-sharing any cryptographic keys that can be used to lock or unlock sensitive information.
The idea behind location-based cryptography is that only a recipient at a precise geographic location can receive an encrypted message — the location itself acts as the credential required for generating an encryption key.
This …