Talk:Secrecy of correspondence

Pic?

Fuzzy aligned numbers printed onto paper protects of unauthorized information, e.g. content of regular letters.

Hello you guys, I've just uploaded that pic and cannot translate the matter into English. Would someone help me? This image should be inserted into the article along with a sentence or two. --Scriberius (talk) 14:05, 10 October 2008 (UTC)

The image is irrelevant. This article is about a legal principle and a basic human right. Your image is more related to encryption, which is outside the scope of this article. -- Petri Krohn (talk) 02:42, 6 December 2008 (UTC)

@Petri Krohn: I disagree. This is not about scrambling of letters or numbers. The image uploaded by Scriberius is a pattern printed by e.g. banks on the inside of envelopes so as to make reading the letter against backlight impossible. It is very much connected to secrecy of correspondence. Your argument would also exclude pictures or mentionings of seals. This is just another technology to keep secrecy of letters intact. --Lommes (talk) 09:43, 19 September 2017 (UTC)

List of countries

Could we get a list of countries (unless there is only the at the top) that have this? —Preceding unsigned comment added by 86.42.212.253 (talk) 21:38, 22 December 2009 (UTC)