New York -- Barnes & Noble said it has detected tampering with PIN pad devices that are used in 63 of its stores. Upon detecting evidence of tampering, which was limited to one compromised PIN pad in each of the affected stores, chain discontinued use of all PIN pads in its nearly 700 stores nationwide by the close of business on Sept.14.
In addition, the company notified federal law enforcement authorities, and has been supporting a federal government investigation into the matter.
