Google AdWords burns - pin codes can be found without opening the envelope

There was already a topic (and not one) about the fact that Google sends out paper letters with a pin code. Today, I was also made happy by this. What surprised - the pin code is on the sticker, which is visible through the window in the letter. Those. in order to recognize it, it is not necessary to open the envelope ... I wonder if any of the postal workers guessed to write it down while the letter was coming from France to Russia? It would be necessary to check, try to activate.



PS who has friends in the incoming international correspondence department - you can ask them to simply photograph all the letters from google and there will be thousands of pin codes for you :)