A team of researchers from Universidad Carlos III de Madrid (UC3M), the Massachusetts Institute of Technology (MIT) and Adobe ...

Deep in the center of our galaxy, scientists believe a strange type of star may be quietly glowing—not from fusion like our ...

In this challenge, I used a Smiggle Spy Pen to draw a full doodle using invisible ink that only appears under UV light! 🔦🖊️ Drawing without seeing the full lines in real time was tricky ...

The Cross Bailey Light Pen is crafted to weigh less than their other pens. It goes for $34 on the Cross site, although it’s currently on sale for $20 on Amazon. You can refill it with various types of ...

I didn’t realize how anxious writing in pen made me feel until I tried using an erasable pen. Now, I’ll never go back.

A 110-year-old lemon used by a German WW1 spy to send secret messages from Britain with invisible ink is going on display in MI5’s first ever public exhibition. The blackened and flattened fruit ...

The luxury SUV’s special wrap has a pattern only visible under UV light. Bang Bang Tattoo will work with Bentley to add custom touches to bespoke vehicles for clients. The two companies are ...

I spy invisible ink pens that belong in the kids' stockings — snag a pack for $8 They have built-in UV lights and are suitable for children ages 3 and up, but you'll have fun using them too!

For many iMessage users, invisible ink offers the illusion of discretion — and a dramatic flourish.