RFID and contactless smart cards have become pervasive technologies nowadays.Over the last few years, more and more systems adopted this technology as replacement for barcodes, magnetic stripe cards and paper tickets for a variety of applications.Contact-less cards consist of a small piece of memory that can be accessed wirelessly, but unlike RFID tags, they also have some computing capabilities. Most of these cards implement some sort of simple symmetric-key cryptography, which makes them suitable for applications that require access control.A number of high profile applications make use of contactless smart cards for access control. For example, they are used for payment in several public transport systems like the Octopus card in Hong Kong, the Oyster card in London, and the OV-Chipkaart in The Netherlands, among others. Many ountries have already incorporated a contactless card in their electronic passports and several car manufacturers have it embedded in their car keys as an anti-theft method. Many office buildings and even secured facilities like airports and military bases, use contactless smart cards for access control.

The Mifare Classic family is the pioneer and front runner in contactless smart card ICs operating in the 13.56 MHz frequency range with read/write capability.

NXP Mifare Classic 4K opens up many new service opportunities by enabling public transport authorities to implement multi-modal systems.

NXP Mifare Classic 4K is right be used for a combination of contactless e-commerce and e-business applications on one single Mifare contactless smart card.

Mifare 4k Cards are widely used in Enterprise / campus card, bus card, highway fees, parking lot management, residential  management,etc…