Companies had set up tables strewn with free branded pens, key fobs, T-shirts and glossy brochures.
Contactless smart chip technology is available in a variety of forms – plastic cards, watches, key fobs, and other handheld devices.
I've just opened someone else's car in the car park with my key fob!
High-tech car thieves could use recording devices to capture your key fob's transmitter code in the parking lot.
