Force Signature was the ability to sense and identify an individual through the Force. The power was first developed by Scott Borek during his sojourn into the Unknown Regions to search for his brother's killer. The power was then taught to Jedi Master's Mason Quarrell, Pup Kickto and Yoder Gree and Jedi Knight Alec Prime. Identification was usually done on the basis of strength of the Force user, use of the Force and the familiarity of the signature based on previous encounters.