How does the keyless entry system work in the Audi A1?

I'm interested in purchasing an Audi A1 and I've heard it has keyless entry, but I'm not sure how it actually works. Can you explain the technology behind it and how reliable it is?

The keyless entry system in the Audi A1 uses a technology called "Passive Entry", which allows you to unlock and lock your car without using a traditional key. It works by sensing your key fob in close proximity to your car, and then automatically unlocking the doors when you approach. It is reliable and convenient, but be sure to always have a backup key in case of battery failure.

The keyless entry in the Audi A1 is part of the Advanced Key system, which also includes a push-to-start button. This means you can start the car without taking the key fob out of your pocket or bag. Just make sure to keep the key on you, as the car may not start if it is not in close enough range.