Ha ?? I do not agree....I give a Platinum card to my wife, she never use it....also, for "掉隻老鼠入米缸", if you do not trust your wife, why you marry her ?...most importantly, you can set transaction limit with the bank if you really have no confidence ...
Only one of my ex has given me such card in the past. I've only used it once (coz using that particular card by that time could get some discount off the items which I bought) with his consent and he was next to me.