/technologies/internet-of-things/b/blog/posts/spark-core-you-can-build-a-wi-fi-enabled-keylock-with-an-e-paper-keypad-in-less-than-a-daySo what is the state of Internet of Things today? How good have the building blocks of IoT become? We tested this by building our own E-Paper keylock for our office front door with Spark Core and our V Tablet device. In the end it took us less than aen-USTelligent Community 12