I usually ask them to use their cards if I don't have mine or one.

Only in Australia have the person replied they can't do that, because it is a felony and they can lose their job! haha..

Malaysian usually swipes it or politely declines. Oh well..

They do. Usually they either have a few cards to rotate, or do it once every few days.

Last time my father quite good relationship with a station owner, then he give our card to the owner ask him swipe. The boss gungho do it everyday, sometimes few times a day until the bonuslink fella's called and as for proof of purchase. We can't show they cancel all the points

Cash maybe. Those using card cannot because they have name and card num there. Once in a while, it wont raise suspicion and won't get caught. That's what I think. But daily definitely will trigger bonuslink people..

It was at David Jones or the one opposite (or was it the same store but different section?), so maybe they didn't allow those.

No wonder