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Using cash to buy them is not hard and the odds of anyone going through the CCTV is low unless you are going to post anthrax to the PM or something. I imagine the main reason to do it was to make it harder to use fake stamps, although there may be some tracking going on.



That is not the point. This is about mass surveillance so what matters is what most people do.

> I imagine the main reason to do it was to make it harder to use fake stamps

it was never put forward as a reason IIRC. How common are forged stamps in the first place, to make it worthwhile




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