An anonymous reader writes "People in Ohio, Michigan and 15 other states found themselves temporarily unable to use their food stamp debit-style cards on Saturday, after a routine test of backup systems by vendor Xerox Corp. resulted in a system failure. Xerox announced late in the evening that access has been restored for users in the 17 states affected by the outage, hours after the first problems were reported. 'Restarting the EBT system required time to ensure service was back at full functionality,' spokeswoman Jennifer Wasmer said in an email. An emergency voucher process was available in some of the areas while the problems were occurring, she said. U.S. Department of Agriculture spokeswoman Courtney Rowe underscored that the outage was not related to the government shutdown."