WC-221

WristComm-221 is an undercover radio unit developed by Escean technology firm Systemec Corporation for military and security usage.

The system consists of a transmitter/receiver unit worn on the belt, a wireless earpiece and pressel system, and a bone microphone. The primary component of the WC-221 lies in its pressel unit, which consists of two circuitry disks attached to the thumb and ring finger of the wearer’s hand (or comparative digit in species with fewer than five fingers) with transparent saddle straps 2mm thick. These independent switches are connected to a transparent triangular pad of adhesive plastic on the palm by two wires, themselves coated with the same medical adhesive used in chest seals to prevent looseness or loss from perspiration. Both wires feed through the pad into a wristband embedded with nanocircuitry that connects with the T/R unit.

Devised to allow maximum covertness in an undercover environment, the system eliminates the need for the user to lift their arm to speak or wear long sleeved clothing to conceal the microphone. Instead, the wearer may simply touch their thumb and finger together in the resting position to establish an open line. The position of the finger pad prevents accidental activation when in the common at-rest position of the hand, while the wristband may be concealed beneath a watch or fashion accessory.

The earpiece is a conical unit invisible from distances beyond 2 feet, while the bone microphone again relies upon a strip of transparent, adhesive layered, non-reflective plastic inlaid with nano wiring, placed along the underside of the jawline. The T/R unit is a small and flexible rectangle that may be worn on a belt and easily concealed beneath the hem of a shirt or jacket. As the T/R system is wireless it is equipped with built-in security algorithms to prevent network intrusion and will alert the wearer to any such attempt.