The good ol’ wartime razzle-dazzle or temporary skin paint.
In my country there is a band of artists from a neighboring country that perform with hoodies and ever changing face paint. To this day, their true identities are still unknown for many years and with many TV appearances. So very effective
Someone should mass print the most common tattoo shapes in temporary tattoos and hand them out at protests or sell them for cheap.
Seems like a great way of just poisoning a lot of data sets
Or sheets you can cut to size that are just gibberish to cover up your actual tattoo (or lack of one) like
CAPTCHA for anarchists
The good ol’ wartime razzle-dazzle or temporary skin paint.
In my country there is a band of artists from a neighboring country that perform with hoodies and ever changing face paint. To this day, their true identities are still unknown for many years and with many TV appearances. So very effective
On a side-note. Those stamps can be circumvented depending on the type of ink/toner the text you are trying to hide is made of.
Just get one of those costume tattoo sleeves for like $5