Colin wrote:

> Our local BP garage has one and the numbers roll up a screen behind the
> tills. I've never seen my number come up correctly yet.

Sainsbury's in Stoke has it at the car park entrance and exit. They pop 
up a message with your reg saying hello or goodbye and a reminder you 
only have 3 hours free parking. I generally find it's accurate if the 
car has just been washed, but it doesn't take much dirt for it to start 
making mistakes.

Steve
NB Breaw ;-)

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