Why do it publicly, the NYPD hand-off was obvious if you knew what to look for, right? Also, why would a NYPD officer use such a indiscreet moment, he couldv waited for the camera to stop rolling and hand it off then, or Trump couldv just sent one of his bodyguards to get it. The hand-off is a signal. Trump getting a ball, and not any ball but a first in the world ball with NFC chip, a chip that transmits data and Q telling us to keep an eye on the ball, another coincidence?  Embedded into the skin of the Telstar 18 is a near field communication tag better known as an NFC tag (specifically, Smartrac’s Circus Flex tag). So when you tap on the ball with your smartphone, you gain instant access to a whole range of exclusive content. https://www.supplychain247.com/article/smartrac_technology_2018_world_cup_ball  How hard would it be for someone to flash that chip and insert their own data, I am sure FSB could pull it off. Here is an unrelated article of a guy who implanted a grain sized RFID (the tech used on the soccer ball)chip that could hold up 1KB of data. I believe it is more probable they exchanged passwords rather than then data, maybe to WL insurances (pure speculations here).