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IMSI catchers are transceivers. They are not hard to find, they are easily triangulated: they literally broadcast their location. Honestly, denying their usage is remarkably pointless.

If you want a location, then I suggest: grab a spectrum analyser; head to Knightsbridge; tell me what happens when you get close to Hans Crescent; then look on the corner and guess why.

And, don't take your phone. Obviously.

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I'm curious, but not in London. All I could see on Google Street View, which is likely old, is a standard cell site on the A4 in that area.

https://www.google.com/maps/@51.499897,-0.163137,3a,49y,276....

Would you happen to have a picture of the install they have in that area?

I believe he's referring to the Ecuadorian Embassy located on that street, where Mr Assange is located presently. There are obvious reasons (WikiLeaks) for keeping track surreptitiously of those visiting him.

I wasn't trying to deny their usage, in fact I have no problem believing these things are out there. I'm just trying to understand the data log that was posted.

I work for a company with a huge dataset of cell tower observations, and so I was interested in locations that I could investigate. I'll try your suggestion and see if I can find anything suspicious.

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