@markah2007 the easyiest way is to make sure that you keep your keys in a Farady pouch, including your spare key. Get into the habit of place your key in the pouch as soon as possible when you have finished with the car.
This what I use, though no longer available, but there are lots of others available.
I hope this helps
Joss
Current car: BMW X2 sDrive 20i M Sport 5dr Step Auto In metallic Portimão Blue. 04:10:2025
Previous car:Peugeot 308 GT Premium 1.2 Pure tech Petrol.