<p>NFCGate is an Android application meant to capture, analyze, or modify NFC traffic. It can be used as a researching tool to reverse engineer protocols or assess the security of protocols against traffic modifications.</p><ul><li><strong>On-device capture</strong>: Captures NFC traffic sent and received by other applications running on the device.</li><li><strong>Relay</strong>: Relays NFC traffic between two devices using <a href="https://github.com/nfcgate/server" target="_blank" rel="noindex nofollow noopener">a server</a>. One device operates as a "reader" reading an NFC tag, the other device emulates an NFC tag using the Host Card Emulation (HCE).</li><li><strong>Replay</strong>: Replays previously captured NFC traffic in either "reader" or "tag" mode.</li><li><strong>Clone</strong>: Clones the initial tag information (e.g. ID).</li><li><a href="https://github.com/pcapng/pcapng" target="_blank" rel="noindex nofollow noopener">pcapng</a> export of captured NFC traffic, readable by Wireshark.</li></ul>