Mystery 1) Who is the unregistered flyer?
Mystery 2) This jetpack is outperforming known jetpacks. How?
Spoiler!
The footage turned out to be fabricated by military. The scientists still built a prototype of the jetpack. Not so fast, light and agile but they made something that was previously considered impossible.
Started searching and found a thread on stackexchange. It looks like thaere are several stories with such a plot: https://scifi.stackexchange.com/questions/74090/scientists-s...
"I just got back from a super-secret conference where someone you don't know--and can't ask questions of--gave me a private demonstration of how they're doing ___ using nothing but Coca-Cola and Mentos.
Your request for funding for ___ is denied, but I'll meet you halfway-- here's a pack of Mentos."
The sensing was easy and worked fine, but at the end of the project they could never replicate the seamless pairing of the device to the phone. Left with all sorts of theories about hacked network stacks...they admitted defeat. Only to then learn: the device was transmitting data with inaudible soundwaves picked up by the phone's microphone.
What you're hinting at can cut both ways: you can fake the magical, while often the magical is far simpler than you thought.