Near-Field Communication (NFC) is a set of short-range wireless protocols that enable two electronic devices, such as a contactless smart card or smartphone to communicate with one another. NFC typically requires the two devices to be a distance of 4cm (1.6 in) or less to initiate a connection. NFC allows you to share small payloads of data between an NFC tag, contactless smart card  and an Android-powered device, or between two Android-powered devices.

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