Hanging on the Telephone: The art of knowing when not to chat

We all know that you shouldn’t use mobile phones when you are in a car, but what about at the supermarket checkout?

One customer tried it recently, and was shocked when the shop assistant refused to serve her until she'd hung up.

The supermarket apologised to the customer but should they have done?

Breakfast's Graham Satchell has been finding out what the public think.