ICOCA isn't accepted for the limousines that arrive at and depart from Kansai International Airport, including those that are operated between Hotarugaike Station, Osaka International Airport and Kansai International Airport, even if they're equipped with card readers.
蛍池駅～大阪空港～関西国際空港を含む関西空港発着はカード読取装置搭載車であっても使用不可）