Patent ID: 8010090

Claim:
A mobile collection system comprising: a portable computing device having a display and a wireless interface, the portable computing device configured to communicate over a wireless access network with the wireless interface; the portable computing device configured to generate an authentication graphical user interface on the display, and communicate with a server computer over the wireless access network to authenticate a user based on authentication credentials received from the user into the authentication graphical user interface; the portable computing device further configured to receive from the server computer over the wireless access network a validated credential and a token that automatically expires after a predetermined time period in response to the authentication credentials being validated by the server computer, the validated credential and the token cached on the portable computing device; the portable computing device further configured to receive from the server computer and cache a plurality of datafiles that are specific to the user in response to the user being authenticated; and the portable computing device establishing a connection to the server computer and authenticating the user with the cached validated credential and the token prior to transfer of data between the portable computing device and the server computer.