A “Micro GPS chip” is misleading as it implies they are microchips. A micro GPS chip is just a really small GPS device. Microchips are implanted. Micro GPS chips are not.
How do micro GPS tracking chips work?
A Micro GPS tracking chip functions just like a regular GPS device. It receives GPS signals from satellites, and using wireless connectivity, it is capable of transmitting location data to an external application installed on any controlling device with internet connectivity albeit a PC, tablet, or cell phone to track the chip. Alerts can arrive as either text, e-mail, or in-app notifications, while location data are represented through a digital map.
There are several brands on the market and they all generally provide both tracking and navigation data.
GPS is an amazing technology and it has a lot of potential for tracking lost pets. My dog has a GPS collar. The only thing that sucks about it is I need to charge it all the time and if someone wants to steal your dog or cat bad enough, they will just take the collar off. Aside from that, the potential GPS has on pet tracking is promising.
GPS microchips are implanted in humans using a high-powered sniper rifle as the long distance injector. They are known to cause only minor physical pain when it enters the body of an unsuspecting human. The impact can easily be compared to that of a mosquito bite, making the whole shot go unnoticed.Once implanted, the microchip locates the target’s exact position using GPS coordinates. Law enforcement is known to have been using this to track down thieves and other criminal suspects.source