# Basic set of software examples how to use uFR Series readers API with Desfire® cards Software example written for Javascript and uFR browser extensions. Shows basic usage of uRF Series readers API with Desfire® cards. Three basic usage software examples formed by difficulty level : Simplest, Simple and Advanced. ### Prerequisites uFR series reader, Browser of your preference (Chrome, Firefox, Opera), uFR Browser extension for the browser with uFR Shell host installed ### Installing Download the uFR Browser extension through the extension marketplace of the browser you're using, and then install the uFR Shell Host through the `Store installer` provided here [here](https://www.d-logic.net/code/nfc-rfid-reader-sdk/ufr-browser_extensions/tree/master/Store%20installers) for the OS in question. ## Usage Example provides basic functionality, formed by difficulty level : 1. Simple - Supports basic file/application manipulation (creation, reading/writing), working with Desfire UID and AES keys. All functions supported work with AES keys. As of version 1.0 ## Acknowledgments * Purpose of this software demo is to provide additional info about usage of uFR Series API specific features. * It is specific to mentioned hardware ONLY and some other hardware might have different approach, please bear in mind that.