Hi there
Smart phone I understand, but GPS tracker? What is this? Is this a UK only facility? We live in Italy and 2 weeks ago I spent 2 and a half hours searching for him in a cruise port (we'd gone to meet friends) only to find him eventually, beyond the ferry terminal, in the Container port. He was in the most awful state. His mobile phone "wouldn't work" - he'd forgotten that he had to press 'send'. I'll do anything not to put either of us through this again.
Badietta