Things your smart phone can replace-8

8. BARCODE AND QR READERS
Barcodes and QR codes are ubiquitous. They're on the products you buy at the supermarket, on the magazines you read and even on the websites you visit. QR codes are the mosaic black-and-white squares that usually offer an efficient link to websites and can store small information such as text, phone numbers, mail addresses, calendar events or even send SMS messages.If you can decode these, you have access to (sometimes) valuable information. Your phone's camera can be used to scan barcodes and QR codes through third-party apps. Launch the app, line up the camera with the QR code and hold the device steady until the app reads the code. All will be revealed. There are even apps that let you create your own QR codes for a an easy way to carry and share information.