 In 2012 NXP signed an agreement with Giesecke & Devrient to integrate MIFARE product-based applications on their secure SIM products.These licensees are developing Near Field Communication products

The encryption used by the MIFARE Classic IC uses a 48-bit key.A presentation by Henryk Plötz and Karsten Nohl at the Chaos Communication Congress in December 2007 described a partial reverse-engineering of the algorithm used in the MIFARE Classic chip.