I'd say look into TI's sensor tag. http://www.ti.com/tool/cc2541dk-sensor http://www.ti.com/tool/cc2541dk-sensor I went to Codemash this year and a gentleman

I'd say look into TI's sensor tag. http://www.ti.com/tool/cc2541dk-sensor http://www.ti.com/tool/cc2541dk-sensor I went to Codemash this year and a gentleman had some interesting BluetoothLE demos on Android.