Dr. Xu carries the tools of his trade in a purpose-built cavity in his prosthetic arm. Unfortunately, the large power capacitor needed to charge the EMP impairs Xu's stamina.
Subdermal Tools is a unique augment belonging to Dr. Xu. It allows him to use his attack to disable an adjacent mainframe device or permanently disable an adjacent guard's Heart Monitor. It also reduces his base AP by 1. It cannot be used on Agency controlled devices. It can be used more than once per turn by refreshing Tony's attack with a Stim III or giving him infinite attacks with a Stim IV.