# TwoFactorAuth class for PHP

PHP class for two-factor authentication using [TOTP](http://en.wikipedia.org/wiki/Time-based_One-time_Password_Algorithm) and [QR-codes](http://en.wikipedia.org/wiki/QR_code). Inspired, based and mostly an improvement on '[GoogleAuthenticator](https://github.com/PHPGangsta/GoogleAuthenticator)'.

## Requirements

* Tested on PHP 5.3 and 5.4
* [cURL](http://php.net/manual/en/book.curl.php) when using the provided `GoogleQRCodeProvider` (default), `QRServerProvider` or `QRicketProvider` but you can also provide your own QR-code provider.


## Usage

*TODO* For now: see demo.php

## License

Licensed under MIT license. See LICENSE file for details.