The invention is a "touchscreen" which does not require any physical touch, but can recognise hand movements just above the screen. It does sound a little futuristic, but it has now been developed by a Luxembourgish company in Foetz, and is being sold worldwide in collaboration with a well-known brand for television devices.
The product has had a large number of pre-orders, and all contracts are signed and ready, to prevent others from copying their idea.