Researchers have developed a rewriteable paper coating that can encrypt secret information with relatively low-tech invisible ink -- water. A message printed out by a water-jet printer on a ...

April 26, 2008 Add as a preferred source on Google Add as a preferred source on Google If you’ve got a spare printer ink cartridge and a document you only want one person to see—or just some free time ...

Invisible ink is back, and it’s better at hiding than ever. A new invisible ink that you can print is harder to reveal than most common cyphers. Liang Li at Shanghai Jiao Tong University in China and ...

A water soluble carbon nanodot ink produces bright long lasting invisible prints with micrometer scale detail and high accuracy for secure and low cost applications. Fluorescent inks fade quickly ...

SAN DIEGO--(BUSINESS WIRE)--VersaCheck.com is pleased to announce the launch of the “Stealth™ iX” invisible ink printer series, based on new proprietary Stealth™ iX invisible printing technology. The ...

Using inks created from artificial materials that exhibit properties not found in nature (aka metamaterials) and commercially-available inkjet printers, researchers at the University of Utah have ...

Fraser Stoddart is affiliated with Northwestern University. Chenfeng Ke is affiliated with Northwestern University. Xisen Hou does not work for, consult, own shares in or receive funding from any ...