Requirements for Designing Next-generation Key Fobs

摘要

Today's key fobs can be generally subdivided into two different functional categories. The first includes Remote Keyless Entry (RKE) devices which require some sort of human intervention or a physical interface of the user to the key fob (e.g., key push) in order for the fob to produce the desired function effect such as unlocking a door or opening a sunroof. The second group of devices provides similar functionality but also features an added level of comfort by performing the same function without physical intervention by the user. Instead of the pushbutton or touch sensor interface, a Passive Entry (PE) identifies the user (and the key fob) as a legitimate entity and automatically triggers authentication or issues a request (e.g., passive door unlock, trunk release, etc.).