A proposed new gadget for Jon to think about.

A new navigation system enables a swarm of 10 lightweight drones to fly together without crashing into one another or obstacles, even in challenging places such as forests.

Drones can compute their location and find a path to follow using a panoply of sensors, which can be expensive and unwieldy. Shrinking down a drone often involves getting rid of key components, impacting its ability to travel safely.

I've always thought having a drone would be interesting, but fear I'd lose it in the trees around here.