Tag: CSN

  • Mifare Plus in a nutshell

    Following the breakdown of Mifare Classic security, NXP has released a new generation of contactless cards to fill the gap, the Mifare Plus. To ease the migration of the existing applications, this new chip keeps the memory model of the Mifare Classic : the card is structured as an array of 16-byte blocks, and the…

  • Why one shouldn’t trust card’s serial number

    Both ISO 14443 and ISO 15693 mandates that the contactless/proximity cards or tags all have a ‘more-or-less unique’ physical identifier, that is required to identify the card or tag during the initial discovery process (and during the anti-collision loop when there’s more than one card in the field). This identifier is called UID in 14443-A…