Final answer:
Cell phone conversations and computer data can be transmitted as digital data. Technology enables the tracking and monitoring of people through various means such as cameras and GPS. Digital evidence can be transported and stored using different forms of media.
Step-by-step explanation:
Cell phone conversations, and television voice and video images are commonly transmitted as digital data, by converting the signal into a sequence of binary ones and zeros. This allows clearer data transmission when the signal is weak, and allows using computer algorithms to compress the digital data to transmit more data in each frequency range. Computer data as well is transmitted as a sequence of binary ones and zeros, each one or zero constituting one bit of data.
Technology has now made it much easier to track and monitor people. Police cars and roadways are equipped with cameras that can photograph the license plate of every passing car or truck and record it in a database; while allowing police to recover stolen vehicles and catch fleeing suspects, this data can also be used to track the movements of law-abiding citizens. But law enforcement officials don't even have to go to this much work; millions of car and truck drivers pay tolls electronically without stopping at toll booths thanks to transponders attached to their vehicles, which can be read by scanners well away from any toll road or bridge to monitor traffic flow or any other purpose (Figure 4.20). The pervasive use of GPS (Global Positioning System) raises similar issues.
Transports and stories digital evidence by considering various forms of media such as photographs, short film clips, first hand accounts, and a musical performance and battle demonstration.