Coffee with a copper at your local supermarket, anyone?

Not sure what to make of this idea.
A good way to make the police approachable or a cheap way for Tesco to get security? Is this the best place for the police to patrol or is it better to have them around in areas where people feel insecure?

Anyway here's the gist of it:

Tesco is to open its doors to the police so they can mingle with shoppers and boost community relations.

Officers will wander the aisles, talking to customers who can alert them to problems they may have.

They will also set up in the supermarket's cafés, with shoppers invited to have "a coffee with a copper" for advice.

Tesco bosses also hope the police presence will deter shoplifters.

More here