Deaf-owned company Convo Relay connects deaf and hearing callers with live interpreters visible on a smartphone's screen.

Convo has partnered with light bulb maker Phillips Hue to take that one step further. Convo Lights use Wi-Fi to link lights that change color in a home or business to the phone.

The technology has changed the way Mozzeria is doing business both in its food truck and in its restaurant. Mozzeria is a food truck in Austin owned by Russell Stein, who also operates a successful brick-and-mortar restaurant by the same name with his wife in San Francisco.