193963 ⎘
Franking apparatus; Cryptography or similar special procedures in a franking system; Time-dependency using timestamps, i.e. recording time in message
Systems and methods for authenticating an electronic message
#2Systems and methods for authenticating an electronic message
#3Systems and methods for authenticating an electronic message
#4Method and system for detection of tampering and verifying authenticity of a 'data capture' data from a value dispensing system