Edgar, a robust yet cuddly mammal, is a bit of a hermit. Warm and sleepy, Edgar deals with disturbances by retracting into his protective shell, raising his needle-sharp thorns. As Edgar is wholly loyal, possessions entrusted to him will be ever-so safe.
Edgar glows and purrs (soft vibration-derived heartbeat) when sleepy -natural state- while he growls and raises his quills when approached. Belongings are stored safely in the carapace, as RFID technology allows only the wearer to access the hidden opening.
LEATHER, QUILLS , ARDUINO, EL WIRE, XBEE RADIO, MICROPHONE, SPEAKER, VIBRATING MOTORS, RFID READER, CAPACITIVE SENSOR.