Money making opportunity

This article in the Telegraph describes how thieves in the UK stole some satellite phones from the British Foreign Office and ran up a bill of over 600,000 pounds.

I don't know how much it costs to set up one of these pay per minute phone numbers but if you did have one that paid $10 per minute you could make a bit of money by calling the number from any unattended phone you encounter. This would be very handy if you visit a lot of different offices.