More and more companies are creating promotions with leading drink manufactures. The promotions use codes printed in the top of the bottle caps that have to be entered in online to enter a sweepstakes or redeem for a prize.If you have ever tried to read these codes you will have noticed that they are really hard to read. Using the refracting properties of plastic you can use a flash light to light up the bottle cap, revealing the code. Hold the bottle cap to the lens of the flash light and the code will appear and be much easier to read like the image to the right. A flashlight that is the same diameter or less then the bottle cap works best.
