Final answer:
Mobile device software must automatically add timestamp and location information to electronic records when in GPS or cell range, which can be used by various applications, including tracking by law enforcement with devices like Stingrays.
Step-by-step explanation:
When mobile device software is within GPS or cell range, it must automatically add a timestamp and location information to electronic records. This capability is crucial for various applications, such as location-based services, mapping, geotagging photos, and for law enforcement for tracking purposes. For instance, a device called Stingray can identify and track all cell phones within a certain radius, enabling law enforcement to potentially build a precise log of locations and times where a mobile device was present. Moreover, facial recognition software can identify pedestrians and cyclists in urban environments. Mobile devices contribute to this monitoring ecosystem by reporting their location to cell phone towers and broadcasting signals to wireless hotspots and Bluetooth devices.