Fast Company: The real estate unicorn Compass, worth $2.2 billion, wants to connect front-lawn signage to the digital world. The final prototype, in the shape of a magnifying glass, stands tall in a company conference room, emitting a gentle glow from the inner rim of its ringed frame. At first glance, the matte-black material and minimalist shape would appear destined for a patio, or inside a home. In fact, if it weren’t for the real estate agent contact information in the center of the glowing ring, it would be hard to call this a “for sale” sign. But that is exactly its purpose: to broadcast to buyers that a home is on the market, and, thanks to embedded technology, to give them access to a far richer set of information than a standard printed sign can contain.