Mifare (13.56 MHz) and EM (125 kHz) dual smart card

Mifare technology and EM combined in the same card. EM is contactless reading technique in the frequency 125kHz. It is a common technique used by most access control systems and is most often used unencrypted.  Mifare is a contactless technology based on the frequency 13,56 MHz. The technique is read/write, which means that you can both read and write data on the card. Different amount of data can be stored depending on the chip's memory capacity. The information is protected with two types of encryption.