Wink functionality added to Google Glass

According to Google, winking to take a picture is faster than pressing the existing camera button or the voice action. The feature will also work when theGoogle Glass’ display is turned off.

Google has said that it expected the feature to become one of the most useful on the device. In a blog post announcing the feature, the company said it can see a number of potential uses for the function in the future.

Imagine a day where you’re riding in the back of a cab and you just wink at the meter to pay”, Google said.

“You wink at a pair of shoes in a shop 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”.

Wearable technology is seen as a major growth area in the next 12 months. Analysts have predicted the market could grow by as many as ten times compared to sales of devices this year.

The general sale of Google Glass and the arrival of Apple’s rumoured iWatch are expected to be major contributors to the surge in demand.

Another report from Juniper Research predicts it will grow in value from $1.4 billion (£86 million) this year to $19 billion (£11.9 billion) by 2018. Analysts at bank Credit Suisse have predicted the figure could be as high as $50 billion (£30.5 billion) by the same point.

However, devices like Google Glass have prompted fears from privacy campaigners. Several restaurants have banned the device and there have been instances of people being fined for using the device while driving.