Plessey Semiconductor have announced the release of an ultra low-cost version of their EPIC sensor for consumer applications (the PS25451). The chip is being aimed at consumer devices such as interactive toys, computer games, TVs, monitors and such like. The chips detect variance in the electronic potential in vicinity of the sensor and can detect the presence (or disappearance) of people. Thus can be used to automatically switch on lights or even detect multiple people for computer games. The original EPIC sensor used titanium dioxide electrodes which are expensive, but can be used in medical applications. These have been replaced by a novel cheaper electrode for the consumer device. It will cost under $1 in 50,000 units.