jelly bean tablet

Right now, QR Code is really so popular. Maybe you can find it in the corner of a TV show, a street, a shop store, an outdoor ads or even on somebody's neck. At first, we should know that QR codes are used to reveal more information about a product, service, event or person. Generally, they direct the scanning device to a special URL, video, coupon, event page, email address, or other digital signpost...