Plug-in induction chip access cards generally use contact ic card chips, such as: SLE5542,SLE5528, AT24C02, AT24C64 and other contact chip models, due to the higher security and confidentiality of ic access cards, is also widely used.

Plug-in access card disadvantages.

1, the card often friction with the reader, it will reduce the life of the card.

2, the chip is contact, not easy to enter the water, high temperature

3、Convenience is poor

     With the rapid development of smart card technology, radio frequency card in life has also been widely used, the current scope of application of radio frequency card: access control attendance, consumption, membership card management, sauna, entertainment, club, induction intelligent door lock, enterprise one card system, access control, channel system, etc..

    initially the access card is id card or magnetic stripe card, but id and magnetic stripe only "card number", it is easy to be copied, security is low, so live gradually to contact access card change, in the process of development, due to the existence of contact access card shortcomings more, the current access card has gradually want to RF card transfer.