considering:1.) pain2.) ability to remove if body refuses to accept foreign body3.) that bone would try to restore itself and prosthesis would become hindrance
a car alarm warns the person and people around and it also disables the car from starting. can start it then they cant drive it. without the remote
wait till you get your clunker and it gets gone/violation feeling
It's more likely that they have it for the conveniece of keyfob door unlock.
Ceramic. Less susceptible to weather conditions. 2 and 3 really depend on the person but in reality most people will reject any foreign body in their body. Metal will last longer however but ceramic does seem to have a better relationship with bone (they use ceramic in crowns and veneers dentally).
