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.

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Want to send a message to someone but keep a little bit of mystery? Invisible Ink lets you do just that. Here's how to use it when sending a message.

A Toronto-based graphic arts studio made a book that can be read only when you pour water over it. It's a poignant symbol of the global water crisis.

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!

Invisible ink pens are just as cool now as they were when we were kids. (Amazon) With over 6,300 five-star ratings from Amazon customers, the Maleden Invisible Ink Pens are a huge hit among gift ...

Color e-ink is something of a work in progress, and ReMarkable will continue to tweak the software with updates every few weeks. But it's hard to see the company getting around this fundamental divide ...

The ReMarkable Paper Pro follows up the ReMarkable 2 with less lag and more colors. But that comes at a cost -- well, many costs.

Last spring, a friend of a friend visited my office and invited me to Langley to speak to Invisible Ink, the CIA’s creative writing group. I asked Vivian (not her real name) what she wanted me to talk ...

And they're not just for kids. "I bought the Maleden Invisible Ink Pens for my four grandkids and they all love to use them to write secret messages," wrote another five-star reviewer.