If at any time the biosignature of a crew member's life-sign becomes physically separated from that crew member's corresponding combadge by a distance greater than or equal to two meters, you are to maintain a location lock on the biosignature of that crewperson. If asked for the location of that crewperson, you are to provide the location of the biosignature and not the discarded combadge, thank you.
Is that even possible?
Granted, the computer and its sensors can distinguish between Klingon, Vulcan, and Human lifesigns, but can individual Human lifesigns be distinguished from each other? Could the computer tell if Riker leaves his combadge in Ten-Forward, if Riker's combadge is still within two meters of a Human, any Human?