193979 ⎘
Franking apparatus; Cryptography or similar special procedures in a franking system Certificates, e.g. X.509
Systems and methods for authenticating an electronic message
#2Systems and methods for authenticating an electronic message
#3Systems and methods for authenticating an electronic message
#4Secure gateway providing adaptable access to services
#5System and method using information based indicia for securing and authenticating transactions
#6System and method using information based indicia for securing and authenticating transactions
#7System and method for manufacturing and securing transport of postage printing devices