FUJITSU.57, 3, p.239-244 (05,2006) 239 FeliCa Office Door Access Security Management Systems Using Mobile FeliCa 57, 3, 05,2006 FeliCa FeliCa IC FeliCa 2004 7 FeliCa FeliCa IC IC FeliCa IC FeliCa Abstract Mobile FeliCa is a total-platform brand by using FeliCa IC chips which are embedded in mobile phones. Nationwide Mobile FeliCa services began in Japan in July 2004. Users can add or delete applic