Thought-controlled devices sound like the stuff of science fiction, but a new invention means it is now possible to post photos to Twitter using the power of your mind alone.
The MindRDR app uses a special headset alongside Google Glass that sits on the user's forehead sensing brainwaves.
Concentrating hard produces a high brainwave reading that tells the app to take a picture and then post it to Twitter.
The new kit is the brainchild of London start-up This Place, whose creative director Chloe Kirton says sharing snaps could just be the start for mind-enabled technology.
"While MindRDR's current capabilities are limited to taking and sharing an image, the possibilities of Google Glass telekinesis are vast. In the future,
MindRDR could give those with conditions like locked-in syndrome, severe multiple sclerosis or quadriplegia the opportunity to interact with the wider world through wearable technology like Google Glass.
Kirton says ThisPlace is in discussions with Professor Stephen Hawking among others about the potential uses of MindRDR.
For all that, MindRDR is not actually a Google product and is not available in the Glass app store.
"This particular application seems to work through a separate piece of kit which you attach to Glass," the company said in a statement.