Opening up Z-Wave code may help to make IoT hum

Home IoT is still reaching for mainstream use. The main backer of Z-Wave, a widely used in-home networking standard, just did something that might help take it there.On Wednesday, chip vendor Sigma Designs made the interoperability layer of Z-Wave available free to the public. This is the code that allows all Z-Wave products to work together. Now anyone can download the code, develop software with it, and give that code to others.Like others in the fledgling IoT business, Z-Wave's backers want t