Is it a printing error? A pixilated maze? One of those puzzles where you have to cross your eyes to see the hidden image? Two-dimensional matrix bar codes are expanding into the mainstream. You can ...

Matrix codes are like bar codes on steroids. To the naked eye, they look deceptively like a series of dots in a rectangular pattern. They’re being used by Japanese companies to identify buildings, by ...

This bar code tattoo was sent into us by [Lifespan]. Before going under the needle, [Lifespan] didn’t care much for tattoos. After seeing this video he realized that a tattoo could have dynamic ...