US Patent 8976244 Personal mobile surveillance systems and methods

An exemplary method includes a mobile user device subsystem 1) acquiring, during operation in a normal surveillance mode, a first set of surveillance data, 2) transmitting, during operation in the normal surveillance mode, the first set of surveillance data to a server subsystem, 3) detecting, during operation in the normal surveillance mode, a trigger event, 4) transitioning, in response to the detecting of the trigger event, from operation in the normal surveillance mode to operation in an enhanced surveillance mode, 5) acquiring, during operation in the enhanced surveillance mode, a second set of surveillance data; and 6) transmitting, during operation in the enhanced surveillance mode, the second set of surveillance data to the server subsystem, wherein the second set of surveillance data comprises an enhanced set of data compared to the first set of surveillance data. Corresponding systems and methods are also disclosed.