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A small and simple Java API to read and write NFC cards. It supports mifare cards and PN 532 chips. This library works with RS232.
More details: http://blog.sibvisions.com/2012/12/23/new-project-embedded-nfc/
...However, when desiring to use the extended features of the individual tags, the user is required to implement the tags binary protocol stack. This Project is an attempt to ease the workload of Developers desiring this type of Access, by providing a simple API for communicating With the tags.
Android app for performing Yubikey Neo NFC challenge-response
YubiChallenge is an Android app that provides a simple, low-level interface for performing challenge-response authentication using the NFC interface of a Yubikey Neo. This app should be triggered using an implicit intent by any external application wishing to perform challenge-response. The intent name should be "com.yubichallenge.NFCActivity.CHALLENGE" and the challenge should be stored in an extra called "challenge".