Quote from: ShardInspector on December 30, 2012, 11:59 pmAt the risk of repeating an attack vector already known and embarrassing myself, there is something I have thought of......LE could definitely obtain a database of all GPS co-ordinates of road side mail boxes in the USA and other countries LE may do the same for their country.That information could be used in conjunction with cell phone tracking to 'flag' as suspicious any cell phones that go within say 2 meters of any postboxes more than say three times a week.With all due respect, that is just crazy. This could flag countless numbers of people who just happen to walk by a mailbox on their way to work, for example. Quote from: ShardInspector on December 30, 2012, 11:59 pmFrom there inquiries could be made to determine if the owner of the cell phone uses tor from their internet connection (use of tor is detectable via data packet pattern analysis), further raising suspicion.From there traditional land based surveillance of those suspicious individuals may reveal behavior sufficient to be used as probable cause for a warrant to knock your door down. This is most unlikely. Carrying out in-person surveillance is EXPENSIVE, and is resorted to only when there is no other way to gather evidence. Quote from: ShardInspector on December 30, 2012, 11:59 pmSuggest leaving your cell phones at home when visiting the post office boxes. Excellent suggestion. Alternatively, you can use a bag designed to act as a Faraday cage and block all access to the phone by radio signals. Example: http://www.idstronghold.com/Cell-Phone-Stronghold-Bag/productinfo/IDSH6001-001/Quote from: ShardInspector on December 30, 2012, 11:59 pmJust putting it out there in case vendors are not aware of what is a definite possibility.BTW, isn't it getting really freaky high tech, it's just like the movies nowadays !The basic premise of your argument appears to be that the authorities have unlimited budgets and/or manpower to conduct investigations. That is most certainly NOT the case. Like every other organization, they have to watch the budgets, and get the most bang for their bucks. Engaging in wild-goose chases such as these, will get anyone fired/demoted very rapidly. NC