Nishi-Nippon Railroad
On March 13, 2010, Hayakaken has been interoperated with two similar cards in Fukuoka—namely nimoca by Nishi-Nippon Railroad (Nishitetsu) and SUGOCA from Kyūshū Railway Company (JR Kyūshū)—plus Suica, a card used in Greater Tokyo Area by East Japan Railway Company (JR East). The card features the face of , the mascot prairie dog of the bureau. Like other electronic fare collection systems in Japan, the card uses RFID technology developed by Sony corporation known as FeliCa.