However, more discreet trackers that feature built-in batteries are also available. The LandAirSea 54 GPS Tracker is an affordable example, with a retail price of $29.95.

Many people use GPS every day, but in the wrong hands, it's a terrifying tool that can help stalkers track their victims. It's been difficult for victims to detect hidden trackers – until now ...

Spytec touts its GPS devices for tracking the locations of valuable possessions and “loved ones.” According to its website, Hapn claims to track more than 460,000 devices and counts customers ...