Direct from MAKE Volume 16, this project shows you how to mod your printer so that it prints with invisible ink. More information, including a PDF of the instructions can be found here: http://blog.makezine.com/archive/2011/04/how-to-for-secret-agents-invisible-ink-printer-mod.html
Questions about Invisible Ink Printer
Want more info about Invisible Ink Printer?
Get free advice from education experts and Noodle community members.