ICODE SLI (SL2 ICS20) chip card access card is very mature RFID technology comply with RF interface ISO15693 which provides  long-range wireless read/write capability. I CODE SLI access card is great solution for access control, identification.
Application: ICODE SLI Access Card is widely used in Parking lot system and hotel door locks, for its long inductive distance, ISO Thin Card is widely used in Access Control System, Time and attendance, parking lot and consuming system.
The ICODE SLI IC is a dedicated chip for intelligent label applications like supply chain management as well as baggage and parcel identification in airline business and mail services. This IC is the first member of a product family of smart label ICs based on the ISO standard ISO/IEC 15693.
Whenever connected to a very simple and cheap type of antenna (as a result of the 13.56 MHz carrier frequency) made out of a few windings printed, winded, etched or punched coil the I-CODE SLI IC can be operated without line of sight up to a distance of 1.5 m (gate width). No battery is needed. When the smart label is positioned in the field of an interrogator antenna, the high speed RF communication interface allows to transmit data with up to 53 kbit/s.
            Features:
            -Contactless transmission of data and supply energy (no battery needed)
            -Operating distance: up to 1.5 m (depending on antenna geometry)
            -Operating frequency: 13.56 MHz (ISM, world-wide licence free available)
            -Fast data transfer: up to 53 kbit/s
            -High data integrity: 16 Bit CRC, framing
            -True anticollision
            -Electronic Article Surveillance (EAS)
            -Application Family Identifier (AFI) supported
            -Data Storage Format Identifier (DSFID)
            -Additional fast anticollision read
            -Write distance equal to read distance
            EEPROM
            -1024 bits, organised in 32 blocks of 4 byte each
            -Data retention of 10 years
            -Write endurance 100.000 cycles

It is mifare ultralight stored on a computer chip for digital mobile phone customer information, encryption of the key contents, such as for GSM network client identity identification, and calls to the customer's voice messages for the use of a SIM card, completely prevent the weaver and talk on the phone, by hacking and SIM card production is strictly according to the GSM international standards and specifications to complete, and reliably guarantee the customer's normal communication. SIM card has a storage capacity, general is 32 k, the maximum can reach 1 gb of memory. Another SIM card number and password, card number, there were 20 digital, digital has a specific meaning, PIN is a SIM card password, it is mainly used to protect the interoperability information security.