UPDATE: Signature Systems - Related to Jimmy Johns Breach 27 Sept 2014 9:45PM EST

Signature Systems Inc., the point-of-sale vendor blamed for a credit and debit card breach involving some 216 Jimmy John’s sandwich shop locations, now says the breach also may have jeopardized customer card numbers at nearly 100 other independent restaurants across the country that use its products.

UPDATE: An additional 108 different restaurants were compromised according to Signature Systems Inc.

UPDATE: Signature Systems breach expands to mom and pop vendors and pizza shops:
Signature Systems Inc., the point-of-sale vendor blamed for a credit and debit card breach involving some 216 Jimmy John’s sandwich shop locations, now says the breach also may have jeopardized customer card numbers at nearly 100 other independent restaurants across the country that use its products.