People 'check in' by using a GPS signal on their phone to locate landmarks. So by checking in, people know where you are and who you're with.
Sometimes it's kinda cool to do...so if you outside Buckingham Palace or somewhere like that, it makes a good talking point.
But if you tag stupidly like 'Tesco with my Mum'.......![]()
Seems rather dangerous to me.
Then I am a paranoid individual after all.


