by Robmonster » Aug 9th, '12, 10:16
Ni Ben,
As far as mechanics goes there is no real technique. You just shove it under there!
I've had occasions where the card gets a little stuck and I've given a REALLY hard push, sure they would feel it but they just don't. As long as you have something else to say or something to keep them busy while doing it then you are fine.
R