Foursquare has updated its Android support to include support for NFC features included in Android 4.0. The popular location sharing app lets users check into a location by simply tapping their devices against a tag at a compatible location.
The updated app lets users exchange lists and add friends via NFC Beam which is a special feature of Ice Cream Sandwich. While the new features are only supported on the Galaxy Nexus and Nexus S at the moment , the list of devices is expected to increase as more phone running Android 4.0 and supporting NFC are released.