"Brian Pascal, a legal fellow at the University of California Hastings, told Ars that inexpensive surveillance devices like TraqCloud are “inevitable.”
“Over time, technology gets smaller, cheaper, and more available to consumers, and there's no reason to think GPS is an exception to that rule,” he wrote in an e-mail. “That said, it is awfully easy to imagine many scary examples of how a $19 consumer-grade GPS unit could be misused."