User state monitoring system and method using motion, and a user access authorization system and method employing same

An automated method for monitoring a physical user presence during an authenticated user access session at an access point, the method comprising:

• wirelessly establishing the authenticated user access session between a wireless digital user authentication device (UAD) and a network application operatively associated with the access point;
• periodically communicating an authenticated presence code from the UAD to the access point during the authenticated user access session so to actively maintain the authenticated user access session;
• acquiring motion data via said UAD during the authenticated user access session so to capture a UAD departure motion representative of the user departing from the access point;
• periodically processing said motion data to identify therefrom said UAD departure motion;
• and
• terminating said authenticated user access session upon identifying said UAD departure motion from said motion data.

A portable digital user authentication device (UAD) for monitoring a physical user presence during an authenticated user access session at an access point, the device comprising:

• a wireless transceiver;
• and
• a digital data processor operable to:
• wirelessly establish the authenticated user access session at the access point via said wireless transceiver;
• acquire motion data during the authenticated user access session representative of user motion;
• periodically process said motion data to identify therefrom a designated UAD departure motion;
• update a user motion status indicator as representative of the user departing from the access point upon identification of said designated UAD departure motion;
• and
• periodically communicate an authenticated presence code and said user motion status indicator to the access point during the authenticated user access session so to actively maintain the authenticated user access session unless said user motion status indicator is representative of the user departing from the access point, wherein said authenticated user access session is terminated upon the access point failing to timely receive said authenticated presence code.