How do they work?

The cards are printed with a specially engineered heat sensitive ink. So when the cards are warm the is ink invisible, as they cool down to room temperature ink appears.

How do you keep them warm?

That’s easy… keep a hand warmer in your pocket, business card holder, or wallet. You can either purchase an electronic hand warmer or use disposable ones. Disposable hand warmers cost about $0.35 each and last up to 10 hours.

What kind of card stock this?

90 pound ivory matte card stock.

We’ve tested out several different card stocks and and colors and have found that this paper is the optimal weight and color for to make the appearing cards look truly magical.

What if its really hot outside?

The ink is fully invisible around 92°F (33°C), and will start to transition sooner.  So they are best used at room temperature. If you are a frequent outdoor performer these cards may not be the best choice for you.

How long does it take to receive these?

These cards are hand printed, so it depends on volume. Please allow up to 3 weeks for delivery.

Custom Orders?

Yes let us know if you want things printed on items other than business cards or if you have unique ideas you want to try out.

Mix and Match?

The cards are printed 10 at a time. So you can have up to 10 different designs per side. Which means…. you can sneak a little something into your business cards. For example have 10 different hidden reveals in your cards. Or… you can have up to 10 different predictions on the back of your cards.