Activation Key is an integral part of any Knightmare Frame, functioning in a manner similar to car keys. Without the Activation Key a Knightmare will not move or operate. Activation Keys are usually protected by a series of random codes to protect it from being captured and used by anybody, except to the one piloting the Knightmare Frame. Activation keys resemble modern storage flash drives along with their wrist straps. Designs range from simple memory sticks to ornately decorated key chains usually reflecting the Knightmare's model and or the Devicer's rank and affiliation.