Sunday, 20 March 2016

Hide Your PIN Number or Password On a Fake Business Card With Magic Ink

Carrying a note to help you remember your PIN number, password, or lock combination can be risky, especially if thieves get a hold of it. This DIY fake business card will only reveal your secret note when you give it a little heat.

Read more...













via Lifehacker http://ift.tt/1Vsg7Un

No comments:

Post a Comment