From : Ars Technica

"Georgia legislators are pushing for a ban on the covert use of GPS tracking devices—but if lojacking people without their consent violates privacy rights, should police remain free to do it without a warrant?

According to a slew of federal court rulings, police can use hidden tracking devices to monitor the public movements of a person or vehicle without bothering with a court order, since these devices don't violate any "reasonable expectation of privacy." But the sponsors of a bill making its way through the Georgia General Assembly think these GPS trackers do violate a privacy interest worth protecting—at least when they're used by private citizens."