These paired lamps use human attraction to light to facilitate long distance communication while still maintaining privacy. The lamps connect over wifi. When one of the lamps is turned, the other lamp changes color. In use, each color would have a different meaning.
To create the lamps, I used and ESP8266 board along with an accelerometer. I used Blynk, an IoT software platform, to facilitate inter-lamp communication. For more hardware details, see below.