SQJ Taipei

Mr. & Mrs. SQJ… 4 kids… several fish… this is our life…

SQJ Taipei header image 2

Invisible Ink Pens

June 7th, 2006 · No Comments

 

Cool… I need one of these pens…..

“Since invisible ink pens use fluorescent ink, a student can write invisible notes on a piece of paper and take the paper to the exam. During the exam, test-takers can read the notes by shining the ultraviolet light — which is at the other end of the pen — onto the paper.”

Tags: Taiwan · Tech

0 responses so far ↓

  • There are no comments yet...Kick things off by filling out the form below.

Leave a Comment