That requires the car to communicate back to the clicker, which is more difficult/expensive, and can fail even if the car did successfully lock. It's certainly

That requires the car to communicate back to the clicker, which is more difficult/expensive, and can fail even if the car did successfully lock. It's certainly possible though, these are usually called "2 way remotes": https://www.compustar.com/what-is-2-way/ https://www.compustar.com/what-is-2-way/