You do realise that most people did not install the RFID themselves but was installed by TNG ppl. So the fault lies with TNG installers

Secondly, for mass market adoption, the tolerance level or margin of levels of any product should be high. Just take smart tag, you can put in anywhere on the windscreens or dashboard of the car and it works

If the RFID has to be put at only a specific location on the headlamp, then it is not mean for mass market adoption as the tolerance level is too low.