Anonymous ID: d37d55 Nov. 5, 2020, 1:21 a.m. No.11474560   🗄️.is đź”—kun

How does the printer microdot code work for monochrome printers? Do the printers still use microdots? Ballot papers are likely to have been printed on black and white printers.

Anonymous ID: d37d55 Nov. 5, 2020, 1:55 a.m. No.11474735   🗄️.is đź”—kun   >>4887

>>11474633

Correct. I used to work for a company that made the pigments for the inks. Infra red, ultra violet, up and down converters (change the wavelength of emitted light), there are many combinations that are already in use on bank notes. This is before you get into radioactive ink.