Everyone knows what the lock, unlock, and trunk buttons on a key fob do. Yours might also have a panic button, but how can this button help you in an emergency?

These are incredibly loud devices ... out in a noisy environment. For a car horn, that’s perfect. The result is that [Tom] can press a number of buttons on his dash to play different sounds ...

Motorists can now easily track down their lost petrol and diesel vehicles in a packed car park just by hitting a simple button on their ... a fully functional car horn is not just a safety measure ...

These are incredibly loud devices ... out in a noisy environment. For a car horn, that’s perfect. The result is that [Tom] can press a number of buttons on his dash to play different sounds ...

Your car horn will start blaring continuously, signaling to the thief that they are being watched. Hopefully, this will cause them to flee the scene. Additionally, the panic button can be useful ...