Celal Göger's invisible phone tech
The mobile display can only be viewed through a pair of Bluetooth-linked smart glassesHaberturk/ YouTybe

It can be hard trying to protect your smartphone screen from prying eyes on public transport – particularly when you're sharing a two-foot square space with your neighbour. Whether you're trying to watch dodgy videos on the way to work or just want to keep your Disney Magic Kingdoms addiction secret, sometimes you really don't want people peeking over your shoulder.

Celal Göger, a mobile phone repairman from Bismil, Turkey, has come up with a novel solution to this problem. Fed up with strangers staring at his phone during his commute, Göger devised a system that turns the display of a smartphone white and makes it readable only to people wearing a pair of specially-designed smart glasses.

While exact technical details behind the system are slim, Turkish news outlet Hurriyet reports that Göger installed a modified chip between the smartphone's RAM and processor chip that was programmed to turn the display white. He then installed a correlating chip into a pair of smart glasses that connects to the phone via Bluetooth and turns the screen readable to the wearer, simply by pressing a button.

Göger said the solution took about four months to develop and could be adapted to hide content on a tablet, computer or television screen.

He told Haberler: "Production is very cheap. Currently, the glasses would cost $3 (£2). It is $4 in total with the software I have installed on the phone."

The mobile phone tinkerer-turned-inventor is now hoping to get his technology patented, and reckons the end-product could be sold for as little as $10 including the Bluetooth system used to power the device.

So there you have it, a new way to watch NSFW content on public transport. Just remember to wear headphones.