A monolithic semiconductor integrated circuit is provided for selectively encrypting or decrypting data transmitted between one of a plurality of devices on the circuit and an external memory. The microtool comprises a tweezer having flexible arms, and an actuating mechanism. The unique bright color of the native copper is further protected from tarnish caused by fingerprint by a protective coating that can withstand moderate heating. If the receiving device does not receive a packet having the correct order tag value or if a transmission error is detected, the receiving device tells the transmitting device to resend the packet. Moreover, the anchors of the present invention are secured to the substrate in such a manner that removal of the insulation layer has little to no affect on the anchoring of the mechanical structures to the substrate.