I've left one unsigned and another had the strip wear off to the point the card says "VOID VOID VOID". Never once stopped me using them. I'm glad for it becaus

I've left one unsigned and another had the strip wear off to the point the card says "VOID VOID VOID". Never once stopped me using them. I'm glad for it because my signature isn't exactly consistent. In fact, I don't think the swipe and signature method is generally allowed in the UK.