A system and method for non-real-time validation of an electronically signed message transmitted via an asynchronous communications link is provided. The method includes creating an electronic message comprising an electronically signed data entry created by executing a secure data application first portion (SDA1) module hosted by a mobile system. The method additionally includes passing the message to a communications management function first portion (CMF1) module via a synchronous interface. The CMF1 module is hosted by the mobile system. The method further includes transmitting the message from the CMF1 module to a communications management function second portion (CMF2) module in a temporally delayed manner using an asynchronous communications link. The CMF2 module is hosted by a central computer system (CCS) located remotely from the mobile system. The method further yet includes validating the electronically signed entry in a temporally delayed manner utilizing a user database. The user database is hosted by the CCS and has stored thereon user account information for all users authorized to electronically sign entries transmitted from the mobile system to the CCS. The user account information includes user information and/or user personal identification numbers (PINs) for each authorized user.