BMW and NXP Semiconducters have announced what they’re calling the world’s first multi-functional car key. Currently in prototype form, the key features contactless payment, personalized access control and public transport e-ticketing for when you’ve left your 7-Series in the parking lot. Future functionality could include general shopping, paying for gas, parking fees and road tolls. Using the same credit-card form-factor as other contactless car keys, the BMW prototype aims to replace not only your keys but your cash.












