Well known among geeks - is it well known among the public? I'm not talking paranoid - the government are spying on me - public, but what about doctors, lawyer

Well known among geeks - is it well known among the public? I'm not talking paranoid - the government are spying on me - public, but what about doctors, lawyers, pharmacy, social services, employment tribunals, unions. There is a lot of confidential information I can track about you by simply pulling plank bits of paper or envelopes from your garbage.