193366 ⎘
Postage metering systems using cryptography
Sub-classes:METHODS AND SYSTEMS FOR DATA AUTHENTICATION SERVICES
#2SYSTEM AND METHOD FOR CRYPTOGRAPHIC-CHAIN-BASED VERIFICATION OF POSTAGE TRANSACTION RECORDS
#3METHODS AND SYSTEMS FOR DATA AUTHENTICATION SERVICES
#4Validation of Freight Carrier Account Numbers in E-Commerce Orders
#5Single secure environment session generating multiple indicia
#6Methods and systems for data authentication services
#7System and method for cryptographic-chain-based verification of postage transaction records
#8Methods and systems for data authentication services
#9Single secure environment session generating multiple indicia
#10Single secure environment session generating multiple indicia
#11System and method for identifying and preventing on-line fraud
#12Systems and methods for protecting content when using a general purpose user interface application