Controlling lights with your voice used to be something only a god could do, but these days we have smart lighting systems to make any of us feel all-powerful. The biggest name is Philips with its Hue bulbs, but now IKEA, Hive and a whole host of others have got in on the act too. Let’s get to the important stuff: what’s right for you, is it going to cost a fortune and is it likely to become obsolete any time soon? Let’s find out.