Final answer:
Active fingerprinting is a powerful technique to identify and track cell phones, but it also carries the risk of being discovered by the user.
Step-by-step explanation:
Active fingerprinting is a technique used to identify and track cell phones within a certain radius. It involves remotely activating a phone's microphone and camera to monitor its user. Although active fingerprinting is more powerful than other tracking methods, such as passive fingerprinting, it also has a higher potential of being discovered by the user.