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Contrary to its name, the Chameleon Movement implant does not allow the host to change their appearance. Rather — it analyzes their surroundings to show them the most inconspicuous path for the way they look.
This generally available augment grants +6 AP whenever the agent becomes cloaked for any reason. Like with stims, if this takes an agent to their full AP or higher they can sprint even if they were prevented from doing so, say by being encumbered.