Imagine never having to go our for coffee again! These drone could bring it right to you every morning!
Is it a bird? Is it a plane? No it's a coffee
A coffee-delivering drone that can detect when people are tired and bring them a drink has been patented by technology company IBM. The patent describes a drone that can identify the "cognitive state" of office workers and lower cups of coffee on an "unspooling string".
It may look something like this …
