While looking for that I stumbled across patterns and text that only shows up after photocopying due to effects such as aliasing and low-pass filtering, also pr

While looking for that I stumbled across patterns and text that only shows up after photocopying due to effects such as aliasing and low-pass filtering, also pretty neat! https://en.wikipedia.org/wiki/Void_pantograph https://en.wikipedia.org/wiki/Void_pantograph And I easily found some shops carrying shirts: http://www.spreadshirt.de/eurion-t-shirts-C4408A23774319#/detail/23774319T6A2PC120434135PA4PC120434136PA4PC120434137PA4PC120434138PA4PC120434139PA4PC120434140PA4PC120434141PA4PC120434142PA4PC120434143PA4PC120434144PA4 http://www.spreadshirt.de/eurion-t-shirts-C4408A23774319#/de... http://www.zazzle.com/eurion_constellation_t_shirt-235509764478000766 http://www.zazzle.com/eurion_constellation_t_shirt-235509764... if you know German, here are some people from AK Vorrat planning a campaign, I don't know whether it's still up to date: http://wiki.vorratsdatenspeicherung.de/EURion http://wiki.vorratsdatenspeicherung.de/EURion And it has been discussed before, huh: https://news.ycombinator.com/item?id=8926114 https://news.ycombinator.com/item?id=8926114