Home > Cybersecurity > Scientists invent new technology to print invisible messages

Scientists invent new technology to print invisible messages

September 25, 2019

Messages can only be seen under UV light and can be erased using a hairdryer

Forget lemon juice and hot irons, there is a new way to write and read invisible messages – and it can be used again and again.

The approach, developed by researchers in China, involves using water to print messages on paper coated with manganese-containing chemicals. The message, invisible to the naked eye, can be read by shining UV light on the paper.

Continue reading…

from Data and computer security | The Guardian https://ift.tt/2lwp1b7
via IFTTT

%d bloggers like this: