Nokia has been showing off some of its upcoming technology, with the ability to turn a handset into a radar device. While there's not much need for traditional radar use in a smartphone – tracking a submarine, for instance – the ability to monitor speed and proximity does mean you'll be able to wave your arms about to control the volume. It's impressive, and it works. Read on after the jump to find out more, or to see it in action...

The demo of Nokia's radar technology was unveiled today in the Nokia Research Centre (NRC) Helsinki. According to Nokia, the technology uses electromagnetic waves to provide different types of wireless sensing. The result is a device that can measure the speed and the direction of movement of approaching objects.

There's lots of potential for this technology, as in theory the gesture control doesn't have to stop at controlling the volume. The radar detection also works when the phone is covered in fabric – with Nokia showing it recognising movement while under a hat – so you may even be able to control it while the phone is still in your pocket. What you'll look like walking down the street flailing your arms around remains to be seen, but it should put a stop to users covertly using their phones while driving...

The technology could also be used for external purposes – such as measuring the speed of runners in a 100 metres race, opening the door for all kinds of future uses. If you're still dubious as to how well it works, check out the video below.

Would you like to control your Nokia by waving at it? Leave us a comment and let us know what you think.