 The memory is provided in 16 "pages" of 4 bytes.Cards based on these chips are so inexpensive that they are often used for disposable tickets for events such as the Football World Cup 2006.It provides only basic security features such as one-time-programmable (OTP) bits and a write-lock feature to prevent re-writing of memory pages but does not include cryptography as applied in other MIFARE product-based cards.