CES is here, and that means that every man and his dog is on show, trying to flog smart home devices at a show that is now very conflicted on whether it specializes in consumer electronics or cars. There have been some notable launches, with some genuine advances in the technologies available, but we are still a long way away from the vision of the smart home we were so emphatically promised by the collective industry just a few years ago. As expected, the show is a proxy-war between Amazon and Google, as the two technology titans continue to duke it out. Apple is, unsurprisingly, not at CES, but nor does it look in any real hurry to try and…