Around 15 years ago my brother and I worked on an RFID based limb and ball tracking prototype. The idea would be to allow instant replays of sporting events from any possible angle.
We never got funding to complete the project, and transmission interference was always tricky.
It’s actually really hard to get a billion dollars directly from the lottery.
You pay like 60% (or more maybe?) taxes if you take it as a lump sum. And still lots of taxes if you annuitize it, and then it will take too long to be a billionaire unless you win it in your 20s maybe.