When HN users recommended it
1 HN user recommended this in 2017, in one comment.
20072026
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
Spy Tec STI GL300 Portable Tracker
Amazon's catalog no longer lists this product (checked 2026-11-02). The name comes from the link HN users posted.
Note that this of course wasn't a GPS tracker, it was a standard implantable RFID chip, as used in pets and livestock. Transmission range on it is a couple centimeters. It can't be used to track people from a distance.
GPS trackers have big antennas and large batteries: https://www.amazon.com/Spy-Tec-STI-GL300-Portable-Tracker/dp... But if you tell your victim that a RFID chip is a GPS tracker, and they believe you, then it largely accomplishes your goals.