... RFID SMART CARD for payment with mobile phone, is a kind of cards that stick on the back side ... Mifare 1k, Mifare 4k, Mifare Ultralight- UHF- Frequency: LF(low frequency):125khz,HF(high frequency):13.56Mhz- Protol: ISO14443A- R/W distance:15mm ... Application: access control & security, time attendance, ticket, parking and mobile phone payment, club/SPA membership management, rewardsand promotion.