since X comes a bit delayed I suppose this is for ♣ lead..if it were for take-out N would X at the the 1st place.. not later... I assume East should well guard the majors to bid 3NT plus it should hold enough ♦'s to produce the ♦ ...
Screen recording would be a good measure against all potential cheating attempts...You could even archive them for using against later allegations just like in video shootings..
I support any solution where technology is employed not only for anti-cheating...but also for the comfort of players and the hassle-free management of any tournament... Regarding the devices I recommend to assume it all personal...Just like in skiing or tennis...each player is assumed to bring his own ...
I am playing the same style described here as the non-serious 3NT with one difference... When I have a single control in other suits than the trump itself then I bid 3NT to show interest in slam with a relatively weaker hand, when I have more than one control then ...