Any of the tech being used now is NOT the mark but it could be at some time in the future. The mark wont be mandated until after the anti-Christ appears. Those who take it will have to bow to the antichrist and place their belief in him above Christ. It's a final decision. There will be no mind changing after doing that. Those who do will be condemned. This is world wide and, as said before, we're not there yet. Most of the truly evil action will likely be centered on the are in ancient Roman Empire but it will still be all inclusive.
Where, in Scripture, do we find the 'THE anti-Christ'???????
IIRC, only two books mention the anti-Christ, 1 and 2 John, and it is spoken of in plurality... and already 'here'...............
