It has been possible to store information within an image on the computer, such as a photo, for some time and it is a well known steganography technique for hiding messages and secret information. You can even get freeware software that will do this, like Free File Camouflage (just one example picked at random). The information is stored within the image in such a way as to be undetectable by the eye or even the computer.
Now suppose you embed information within the image on a computer screen instead of a photo. It doesn't have to be anything special, just whatever is on the screen at the time, such as the standard Windows desktop, editing a file in Word, showing a presentation and so on. By taking a video of the computer screen the information can be extracted by analysing the image.
What Fujitsu has done is to embed the network identity of the computer, such as the IP address, the wireless network SSID it is on and so on. The phone extracts this from the video of the computer screen and then sets up a standard wireless connection to transfer the files.
To see how useful this could be, imagine making a presentation. The audience can simply point their phones or tablets at the screen and push a button (to run the app) to receive all the files associated with the presentation. That's brilliant.
I think this has other applications. For example, suppose you have a video or movie on your phone or tablet and you want to watch it on your big screen Wi-Fi enabled TV. You literally just need to point your phone at the TV to show it on and push a button. You could also mirror the tablet or phone for big screen gaming and so on. Basically, you'd just be using Fujitsu's software to pair the devices. You could pair any screen and mobile device just by pointing one at the other. It's an interesting idea.
Go to Fujitsu for more information...
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