The screen of columnscreates an ever-changing pattern oflight and shadow throughout the seasons and times of the day, making the building a 'sensor' of light.
Since there's no physical interface on the device to configure WiFi, the company's developed Blinkup, a way to enter SSID and password information on any iOS and Android smartphone and beam it to the Electric Imp's lightsensor by rapidly pulsing the handset's screen on and off.