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A near field communication tag (NFC tag) is a sticker or wristband with small microchips that can be read by in range mobile devices. Information is stored in these microchips.
A NFC tag has the ability to send data to other mobile phones with NFC capabilities. NFC tags also perform a variety of actions, such as changing handset settings or launching a website.
Many of today's smartphones have built-in NFC capabilities, and smartphone users can purchase and acquire tags online. The amount of information stored on a NFC tag depends on the tag type, as tag memory capacity varies by tag. For example, a tag can store a phone number or URL.A modern example of a commonly used NFC tag function is mobile payment processing, where users swipe or flick a mobile phone on a NFC reader. Google's version of this system is Google Wallet.