May 15, 2004
Business cards with psedo-invisible ink
Imagine this situation: You are at a meeting, someone asks for a card, you open your wallet pull out an individually wrapped business card, you open the package and notice that the card is blank, you write your name and number on the card. Over the next 5-10 minutes your logo and everything else show up on the other side of the card due to light reacting with a special invisible ink!
Posted by binduwavell at May 15, 2004 11:59 PMComments
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