IDK. I used one on Saturday and one on Sunday, and when I went to get them from my wallet yesterday they were gone. GONE. Then when I checked my balance online, a couple of >$350 purchases had been made. My credit card company was awesome, canceled it right away. The bank? Their 24-hour line is actually only a 7am-pm line. Which, when I called the police to file a report, just for record-keeping purposes, the police couldn't believe. They thought *surely* a bank like WaMu had access 24/7. Uh. Not for that purpose. You can make a transaction, but anything that requires a person? No.