The NXP 
MIFARE Plus® product family adds security to Smart City services by enabling a seamless migration of contactless infrastructures to higher security, and its backward compatibility allows for a cost-efficient way to upgrade the security level of in-place smart card applications. Special features, such as support for mobile and over-the-air top-ups, make Smart City services even more convenient to use.
NXP Semiconductors Presents the MIFARE SAM AV3
Securing Connected Systems with NXP Semiconductors More and more of daily life has become contactless. As we navigate through our