I cannot really believe that the Watchtower Society busies itself with tracking apostates or it's members .
It is true that when one logs into KHConf or LiveKH you are asked the number looking at it and one of them asks your name"for the count" . I never wanted to give my name on line so I used put random letters in and it accepted me.
Zoom also asks your name because you are taking part in a vid conference call and the Watchtower Conductor takes answers if you volunteer one. I cannot see this going any futher than the local congregation.
That said, I am certainly not a tech expert. I am just giving an opinion based on my experience of this Society.