Imagine a regular day you are out and about. You step out, go to an ATM and withdraw money. That embarrassing itch you were ignoring is definitely a skin infection so you decide to buy an over-the-counter medicine for it. On your way back, you decide to meet a friend and catch up over coffee. What if, all this while, you have someone looking over your shoulder? None of what you are doing is potentially problematic. You have nothing to hide. But the idea that everything you do is being watched can still be unnerving.