Cyberscanner arm

A Cyberscanner arm was a class of cybernetic arms.

Going far beyond simply replacing a lost limb, a Cyberscanner arm incorporated a basic scanner for medium range detection, and displayed data via a holo-projector that appears above the user's open palm. A typical Cyberscanner arm was capable of detecting and displaying motion, life-forms, energy signatures, and other common targets as desired.

One notable model was the Neuro-Saav Technologies ScanMaster Arm.

Source

 * Star Wars: Edge of the Empire Core Rulebook