Safeguarding the sweetheart on the go

Hello, I have a urelfer and am always thinking about how I can secure the old car with little security features on the road, for example if I spend the night in the hotel or just sit in the restaurant and cannot see it. Alternatives: 1. Wheel claw: This is attached to the wheel, similar to that used by the police against false parkers, especially in NL. 2. Safety of the steering wheel: Here again there are two alternatives: 2a.: The solution that surrounds the dashboard With and without alarm. 2b. The solution, the steering wheel coupled with the brake pedal. In the solutions to 2. I have already heard that the steering wheel is simply sawn and the protection is thereby obsolete. Which is to be guessed? Have I forgotten one if necessary? What advantages and disadvantages are there? Thanks in advance for the inspirations.