The GuardBot is an amphibious surveillance robot developed by American Unmanned Systems. The system is based on a rotating rubber ball and can be remotely controlled by an operator.  It will eventually be programmed to navigate automatically by GPS.

GuardBot features two payload pays which can carry various sensors to include video, night vision, a laser spectroscope for explosives detection, audio, and radio surveillance. The system has an endurance between four and six hours and can operate on grass, snow, mud, sand, and water.

The system was demonstrated to the Marine Corps in 2012 at Quantico, VA (see below video). In January 2014, GuardBot was successfully deployed from water craft at Naval Amphibious Base in Little Creek, Virginia.