Wireless positioning lighting system

Dear All!
I have seen these two videos:

Now, I'm asking myself how they did the positioning and communication of these devices.
It is fully bases on bluetooth, since the devices need to pair with a mobile phone.

Is it possible to get a location of an arduino and use each arduino as one 'pixel' (light) of an image?
By doing so I would be able to create a large screen with movable devices.

Thanks in advance!!

Could you explain, in words, what it is you want to do ?