qwerty made me think of something too... When I need to bring my debit card, I call the bank and ask them to set the daily limit to a lower than normal amount (it's already pretty low because I did have some trouble in the US). I also have an app that allows me to turn my card "on" and "off". It's always "off" unless I need to make a purchase. If I need to, I'll use a credit card with a higher limit for emergency purchases, but knock on wood!!!!!!