M2 Cardiac Cycle Sensor

The M2 Cardiac Cycle Sensor, more easily known as the Heartbeat Sensor, is a heartbeat detection system that can detect the presence of a person by sensing the minute vibrations caused by human and faunus heartbeats.

History
What became the M2 Cardiac Cycle Sensor first began with its prototype, the XM1. The XM1 was incredibly limited in function compared to the M2, with a much more bulky design to match. The XM1 worked like a scanner, having to be pointed in the general direction of a target in order to function properly. It only had an effective range of ten meters.

After receiving feedback from SENTINEL field operatives, the R&D Unit worked tirelessly to create a better heartbeat sensor, resulting in the M2.

Appearance
The M2 resembles a tablet with a green display screen and is only slightly larger than a fully extended Scroll. When switched on, the screen lights up, displaying a half polar coordinate map. The M2 visibly wipes from the bottom center outwards as it scans the immediate area. Any detected targets show up on the map as a bright green dot, friendly or otherwise.