 The near field connection is only used when the 4U syncs with a designated "touch spots", located all over Japan in order to download special items and content to the 4U.The 4U is set in DoriTama Town and the number of characters included is only 10 with other characters available only for download through NFC connectivity.An official App for Android only is also released to synch with the 4U, allowing for more downloadable content.