I thought that only vehicle need to be installed with tracking devices so that the vehicle can be traced via satellite in case that it is stolen. Once traced, the vehicle can be immobilized and recovered. However, in Mexico, even human can be tracked via satellite using implant chips.
In Mexico, according to the report, they use the implant chips embedded under their skin to enabled them to be traced in case they were being kidnapped since the kidnapping rate in Mexico is very high.
if you are interested, there is a company that can do it for you. However, you have to pay monthly fees for the service.