secrec marcelo Cash isn't as anonymous as you think: https://www.youtube.com/watch?v=VaADGMjfuvk I don't know what language that is, but its not English, which is the language of this forum, so not useful.
20000pencils secrec TG;DU is that there's still some limited tracking possible with banknotes through the serial numbers they have printed on them (I'm oversimplifying, so I would suggest watching the video if you have at least some understanding of German).