… better even than a tennis ball is a CHARGED metal / electromagnetic ball ;). SPEAKING, you can harvest the static electricity rather than allowing it to go to waste. You ever zapped yourself leaving a car after a long ride? Wasteful!
Speaking of electromagnetic balls, I do believe with sufficient sensitivity this does replace or augment Lidar, thermal, video, etc. And I do believe this enumeration renders this original invention as part and parcel to my international copyright bundle. Just sayin’ is all…