I have this experience before, the BC (on SBS 9326 (maybe 'C'),
23 June 2006, 15:44 hrs) requested my Ez-link card, he never tell
me to tap and check but he just look at it and let me pass.
I am only 13, very
obvious, maybe nowadays, children grow very tall, difficult to see
wheather its an adult (over 1
or school teen/child.
So far, I had once experience on this. I had got no problem on the
other 147s such as 9514, 1968, 7399, 7371, 7324, 7313 etc, all
pass. I do not use cash all time, so I do not know if the other BCs
are like this.