SMS Text News’ Mobile Industry Review has a very responsible public service post about the dangers of your personal details being shared without your knowledge.
Check out what they saw in London and think next time you give out yours who may be seeing all that gets inputted into the computer.
I recently expressed a similar concern to the Chief Privacy Officer of American Express about being asked to provide answers to questions that impact account security when in public and the merchant had to call in, something that happens more and more to global nomads even if you notify AMEX of your movements.
Bottom line. Be careful with your details.