Best Bluetooth Smart gadgets

 Perhaps one day all of our gadgets, home appliances and even our cars will be on a mobile 4G network, but for now it's a streamlined technology called Bluetooth Smart – also known as Bluetooth 4.0 and Bluetooth Low Energy – that is ushering in a new generation of connected electronics.

An intelligent, low-energy version of the same Bluetooth tech we've all been using for yonks, Bluetooth Smart links gadgets together – as it always did. It does away with the annoying and time-consuming pairing process, and uses almost no power to exchange data between a gadget and – typically – a smartphone. Supported by all smartphones running iOS, Android and Windows, Bluetooth Smart is already in 500 million devices and is predicted to be used by three billion in just four years' time.