NXP MIFARE ® Classic EV1 1K Key Fobs – Pack of 100 100 MIFARE ® 1K key fobs with genuine NXP ® Phillips chips.  MF1 S50 Contactless interface Operating frequency: 13.56 MIFARE ® Classic Uses ISO 14443A transport protocol 1 Kbytes EEPROM   Applications:   Event management Loyalty schemes Swimming Pools Gym membership Promotional products Electronic ticketing for public transport Road tolls Access control systems Multiple applications access like one card use for parking as well as ID and access control Advanced public transportation scheme Highly secure access management Closed-loop e-payment scheme Event ticketing eGovernment applications