Near Field Communication (NFC) is a standards-based short-range wireless connectivity technology that makes life easier and more convenient for consumers around the world by making it simpler to make transactions, exchange digital content, and connect electronic devices with a touch. NFC is compatible with hundreds of millions of contactless cards and readers already deployed worldwide.
Reader/Writer Mode enables NFC-enabled devices read from or write to NFC tags or even do some actions by tapping your mobile on NFC tags.
Peer to Peer mode allow two NFC-enabled devices to establish connection to exchange information, like business cards, photos or any file type, also Multiplayers Games start to get benefits from Peer to Peer mode by allowing two devices play together using Peer to Peer Mode
In Card Emuladtion Mode, the NFC-enabled device act as a smart card, so you can use it for paying to cashiers, use it in trains, buses etc...
So in nearest future there will be no need to hold several visa cards or have several smart cards, everything will be done through your mobile.
User can use NFC tag to save business card & share it by tapping on tag.
NFC Tag can save URL, file link or URI (ftp,news,telnet etc..)
NFC Tag can save WIFI network credentials, indeed users can login to WIFI network by tapping on the tag.
User can connect to any device with bluetooth connection by tapping on NFC Tag for this device then NFC tag trigger the connection between user & the bluetooth device.
User can send email by tapping on NFC tag that include the email information (mail address, Subject, Mail message).
User can call a number by tapping on NFC tag containing the phone number.
NFC tag can save address coordinates and by tapping on NFC tag, user will be able to see the address on google map.
User can launch an application by saving the packagename on NFC tag.
User can save plain text on NFC tag, and by tapping on NFC tag the text will be opened for reading.
User can send SMS by tapping on NFC tag containg phone number & text message to be sent.
Click here for updated list of NFC phones.