Patent ID: 7822985

Claim:
A real-time electronic signature validation (RTESV) system, said system comprising: at least one stationary central computer system (CCS) including a ground mobile user account management (GMUAM) module, the GMUAM module comprising a GMUAM user database that is updatable by an enterprise user system to have stored thereon up-to-date authorized user account information; and at least one onboard computer system (OCS) hosted by at least one mobile system, where the at least one mobile system is located on a mobile vehicle, each OCS including: a mobile user account management (MUAM) module adapted to communicate with the GMUAM module, the MUAM module comprising a MUAM user database that is updatable by the GMUAM to have stored thereon the up-to-date authorized user account information stored on the GMUAM database; a subsystem of the OCS that receives an entry made by a user using the OCS and that generates a dynamic certificate that includes: a first identifier which is uniquely associated with the OCS from which the entry was created; and and a second identifier which identifies the mobile vehicle that the OCS is located on; a signature validator module in communication with the subsystem, and further being communicatively connected to the MUAM module to access the MUAM database and verify whether user account information included in an electronic signature initiated by a secure data application (SDA) hosted by the OCS is authorized user account information.