A free QR code reader can read and decode all kinds of QR code, including contacts, products, URL, Wi-Fi, text, books, E-mail, location, calendar, etc. You can also use a QR scanner to scan promotions and coupon codes in shops to get discounts. Scan any QR code for additional information, including results from popular online services; Amazon, eBay, and Google: 100% Free QR Scanner app!

It’s very easy to use, no need to press any buttons or adjust the zoom, just open it and point to the QR code, it will auto recognize, scan and decode the QR code. After scanning, several relevant options for the results will be provided, you can search the products online, visit the websites, or even connect to Wi-Fi without entering the password.