fysdt writes: "The FBI's use of GPS vehicle tracking devices is becoming a contentious privacy issue in the courts, with the Obama administration seeking Supreme Court approval for its use of the devices without a warrant, and a federal civil rights lawsuit targeting the Justice Department for tracking the movements of an Arab-American student. In the midst of this legal controversy, Threat Level decided to take a look at the inside of one of the devices, with the help of the teardown artists at iFixit." Link to Original Source
Computers are unreliable, but humans are even more unreliable.
Any system which depends on human reliability is unreliable.