Method and system for planar, multi-function, multi-power sourced, long battery life radio communication appliance
Some embodiments provide multifunctional device that provides two or more of the following functions: a) EKey; b) Ecall capability; c) Body Electric Field measurement; d) Body proximity measurement; e) External Electric Field measurement; f) One or two way voice announcement; g) Motion sensor. Some embodiments provide an Ekey that operates from battery energy and energy harvested by one or more of the following transducers: a) Photo voltaic cell; b) Radio Frequency antenna; c) Mechanical vibration, flexing; c) thermo-electric transducer. Some embodiments provide a planar Ekey encapsulated in an insulator matrix and comprising: a) antenna realized on a flat substrate; b) Electronic circuits realized on a flat substrate that provided interconnection to electronic components and is parallel to antenna plane; b) A conformal shaped ES device that conforms above the electronic components. Other features are also provided.
1. A structure comprising an electronic key constructed to operate from battery energy and energy harvested by at least a transducer comprising an electro-mechanical transducer which is a piezo electric and/or electrostrictive transducer; where the electronic key has a badge hook clip for attachment to an apparel, where the weight of the electronic key is supported via the electro-mechanical transducer.