In this day, QR Codes (Quick Response code) are used every field as a handy way to share information, because it can handle thousands of data, easy to generate, easy to read and faster than classic bar code. Here is a free application called QR Droid for Android phone for reading and generating QR code.
APKinstall is a free web service that helps you do one thing. With it you can very easily install any Android app (.apk file) download into your computer without transferring them to your Android device via USB. I think, new android users can benefit much from this service.
Basically, QR Codes (Quick Response codes) are similar to classic barcode, but can handle more data. Nowadays they are used everywhere as a handy way to share information, because it is quite fast, can handle thousands of data, easy to generate and easy to read.
Unlike standard bar codes which can handle a maximum of 20 digits, QR Code can handle all types of data – numeric & alphabetic characters, symbols, binary, etc – and more than 4,000 characters can be encoded in one symbol.