Man, that would've been good.If that's the case, they missed a humour opportunity to show some Adonis' face on the book cover, then pan to our H.R.'s smiling mug signing copies.
I mean, Jesse is a member of Team Flash. Maybe instead of choosing who sees his real face, there's an actual setting that knows who the members of Team Flash are?The only inconsistency with the face masking device is that when Jesse Quick first saw H.R. she recognized him as her Father without hesitation or explanation. Maybe H.R. powers it down when he is within Star Labs?
I've explained away the future H.R. book reading as the general populace knowing about inter-dimensional travel by that point in time.