You should always ensure your car's properly locked, and keep your keys far away from doors and windows.
It's worth considering buying an 'RFID' blocking pouch for your keys, which should block any signals thieves might be using to unlock your car remotely.
Security devices such as a steering wheel lock, driveway parking post, or wheel clamp can also help to deter thieves. They wouldn't be able to drive off straight away even if they did unlock your car, and it'd create a lot more hassle for them!
Lastly, if all else fails, you can use the 'Find My Car' feature in our mobile app.