I usually rarely need to use cash card even morning when I go to
work, I pass the ERP gate before operation time. It is when I go to
town(Ie Orchard,etc,etc) then I put in my cash card. Because I
rarely use my cash card so I tend to forget to take it out...

Taking other ppl's card? Well, really not me, I don't really like
peopl curse and swear me like when someone take my card 
Putting sticker and lock is also not for me, look kind of
obiang.
Oh well...just have to remember to take it out next time.