Playing devil's advocate here: I can kinda, sorta see the
logic in keeping the card in one's pocket or bag when tapping it as
it eliminates the chance of accidentally dropping the card and
having to hold up people behind you as you scurry to pick it
up.
Going into a half-squat position, aiming and whacking your left
chest at the card reader and then going back into a standing
position takes up more time than simply taking the card out,
tapping it, and putting the card back into the pocket.
Hell, those ah peks who had to aim their chests at the card
reader? They usually needed several attempts at chest-aiming to be
successful. They actually had to whack their chests against the
card reader repeatedly. More time wasted.
Going into half-squats is also biomechanically inefficient, and
the stresses on the knees are significant, particularly for old ah
peks with weak joints.
And that Indian fella? I would think that bowing ninety degrees
would lead to the risk of his ez-link card falling out of his chest
pocket.
