Key fob is a small security hardware device with built-in authentication used to control and secure access to network services and data. It could be made of ABS or Epoxy. The tag is available for RFID technology, from low frequency 125KHz to high frequency 13.56MHz,thus it provides an optimal solution for different RFID applications. Typically used for: access control, attendance control, identification, logistics, industrial automation, tickets, membership, public transportation, cashless payment, swimming pools.