Develop a low power (battery driven) wireless device/sensor.

The Bluetooth Smart SensorTag is designed to shorten the design time for Bluetooth App development from months to hours by allowing App developers to write Apps that enable and use advanced sensors directly from a smartphone without any firmware or embedded software development.

Source: Simplelink SensorTag – TI.com

MGC3130.  The MGC3130 is the world’s first electrical-field (E-field) based three-dimensional (3D) tracking and gesture controller. The chip is based on Microchip’s patented GestIC® technology and enables user command input with natural hand and finger movements in free-space. The GestIC Colibri Suite is processed on-chip and enables a wide range of gesture applications shortening development cycles of developers. Through its configurable sensing states mobile friendly power consumption as low as 150 microwatts can be realized.