Woolie Card

Although I rate Woolworths as a shop highly I have a problem with the security on their Woolworth card.When using the card to pay for purchases at Woolies there are no pin code or check of identity .This implies that should someone get hold of your Woolies card they can purchase at Woolies up to the limit on your card and you would only notice it when you get your card statement which would be to late to do something. I have written to Woolies about this they only acknowledge receipt but did nothing further