Quoting: Cunning Plan
When I order the part from eBay, the seller will have our address. IS there anyway they can or could have duplicated the keys to allow access to the car?
I am being super suspicious here, but I have not fitted remote central locking before and I am not totally sure what is going on.
As I understand it, even if they did have spare keys 'coded' to that remote receiver, they would not be able to get into our car without having the glass crystal from our existing keys? Is that correct?
I had some experience with remote's working for Alps, though not for VAG.
Generally you need to pair the remote with the vehicle so if you can clear all stored remote's then no they shouldn't be able to have a duplicate.
I would guess they could get into the vehicle if they managed to pair a remote but not be able to disable the immobiliser without the crystal.