Also consider getting a steering wheel lock, like my Dad used to have in the 80s:
https://www.halfords.com/motoring/ca...ck-311399.html
Won't stop a determined professional thief but is at least a deterrent and coupled with the faraday pouch/box or tin foil wrap should put them off sufficiently.
It's like the old running away from a lion joke, you don't need to be the most secure car on the street, just more secure than the other guy.