MIFARE Plus®X 4 K with 7 byte unique ID (UID) cards provide highest security level compared with other standard RFID chips (e.g. MIFARE Classic®1K). MIFARE Plus® cards include AES-128 (Advanced Encryption Standard) for authentication, wholeness of data and encryption. These cards are suitable for use in environments where highest level of security is required (e.g. e-payment, access control, etc.).