In an apparent effort to be either as effortless, or as creepy, as possible, Google Glass has just got a new feature:

Winking.

That's right, a new software update to Google's wearable computer lets users 'wink' to take pictures using the built in camera. Even when the screen is off.

The new gesture is part of a wide-ranging update to the device, which is still only available in America to a select group of beta-testers known as 'Explorers'.

The new software - 'XE12' - also lets users upload videos straight to Google's YouTube service, and adds screen locks and other features.

Google said in a blog post:

"Glass is about helping you look up and experience the world around you without getting bogged down by technology. Based on this philosophy, we've got a new setting that lets you quickly and easily capture the moments you care about with a simple wink of the eye. Whether it's capturing an amazing sunset on an evening walk, or photographing your receipt for the lunch you'll need to expense, you can now stay in the moment and wink to take a picture instantly. If you want to turn it on, just swipe over to Settings.

We’re starting with pictures, but just think about what else is possible. Imagine a day where you’re riding in the back of a cab and you just wink at the meter to pay. You wink at a pair of shoes in a shop window and your size is shipped to your door. You wink at a cookbook recipe and the instructions appear right in front of you – hands-free, no mess, no fuss. Pretty cool, right?"

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  • Philips' M1BT

    Philips' M1BT headphones are almost flawless. With excellent, deep, rich sound - even when connected wirelessly to your media player or phone - they perform brilliantly in almost any situation. With very decent battery life, simple on-board controls and luxurious construction (with a full leather headband and soft memory foam ear pieces) they're really hard to fault. And for less than £200? You'd be hard pressed to find anything as good, or as versatile, anywhere near that price.

  • Bowers & Wilkins P3

    These headphones won <a href="http://www.t3.com/reviews/b-and-w-p3-review" target="_blank">T3's music gadget of the year award</a>, and if you try them out you'll see why. The sound is beautifully rendered, while the build quality and styling is pretty flawless. (£169)

  • RHA MA600i

    RHA make great headphones right here in Britain, and while we were generally fans of their more-expensive 750i in-ear phones <a href="http://www.huffingtonpost.co.uk/2013/09/26/rha-m750i-review_n_3995780.html">we found them a bit heavy and 'brutalist' for our taste.</a> The <a href="http://www.amazon.co.uk/RHA-MA600i-Isolating-Headphone-microphone/dp/B00ELAM8M8/ref=sr_1_3?s=electronics&ie=UTF8&qid=1383836542&sr=1-3&keywords=rha">MA600i variants</a> are better overall. They're lighter, smaller, cheaper and still have great sound-quality with excellent noise isolation.

  • Sol Republic Tracks HD

    Sol Republic's 'Tracks' headphones (£79.99) are solid, well-designed, powerful -- and totally overshadowed by the fact that they're <a href="http://www.huffingtonpost.co.uk/2013/02/15/sol-republic-tracks-v8-review_n_2695230.html" target="_blank">virtually unbreakable, and thus impossible to stop fiddling with.</a>

  • Bose QuietComfort 20i

    These in-ear headphones are among the best we've ever tested - and you'd hope so, <a href="http://www.bose.co.uk/GB/en/home-and-personal-audio/headphones-and-headsets/acoustic-noise-cancelling-headphones/quietcomfort-20i-headphones/" target="_blank">because at £259 they aren't cheap</a>. What you get for your money is a combination of great, rich basic sound, brilliant noise-cancelling tech and the most comfortable fit you can find without involving a custom-made solution.

  • ZIK Parrot

    These unique headphones are not only designed by Philippe Starck, and as such gorgeous, but are also wireless, have touch controls on the ear piece and are NFC enabled - meaning you can transfer music to them with a single tap. They also know when you've taken them off, and automatically pause when you do. (£250)

  • AKG K451

    These headphones have won fans all around the world for one simple reason: for this price (£50) <a href="http://www.amazon.co.uk/AKG-K451-Foldable-Mini-Headset/dp/B005LBQ7BY/ref=sr_1_1?ie=UTF8&qid=1383837172&sr=8-1&keywords=akg+headphone" target="_blank">you can't do better</a>. They sound excellent, fold up neatly to stow away in a bag, come with a basic cable and a cable with a built-in three-button remote and won't leave you bereft if you lose or break them.

  • Marshal Major 50

    These <a href="http://www.marshallheadphones.com/headphones/major/major-50-fx" target="_blank">limited-edition Marshall headphones</a> come with all the unique styling and sound engineering you'd expect for the amp masters, along with some extra design touches for good measure. They include gold-rimmed pads, inscriptions on the inside of the headband and a remote/microphone control on the cable. For £140 they aren't cheap - but there're no other headphones around with this kind of rock pedigree.

  • Jaybird Freedom Sprint

    These resilient, water-resistant Bluetooth headphones are designed for exercise, and come with a set of neat ear-moulding foam inserts to keep them tightly in place when you're running. <a href="http://www.huffingtonpost.co.uk/2012/10/24/jaybird-freedom-sprint-headphones_n_2009106.html" target="_blank">For £105 it's hard to find a better pair of sport earbuds.</a>