Valerie Fajard, 21, of Bronx, a cashier at a Westchester Staples, was arrested Tuesday, accused of using a skimming device to capture the data from about 50 unsuspecting customers.
The theft was occuring at the Staples store on Boston Post Road between May and December, 2011 according to Westchester County police.
Police say she then sold the information for $6,000 to a Bronx man who used it to create fraudulent credit cards to rack up more than $180,000 in purchases.
Fajardo was arrested on charges of criminal possession of a forgery device, scheme to defraud and other charges and is being held without bail at the Westchester County jail in Valhalla.
Police have yet to arrest the Bronx resident, who outfitted her with the skimmer and retrieved it to download information, or anyone else in their ongoing investigation. Many of the cards were Mastercards issued by Citibank, which initiated a fraud investigation.
Anyone with information on the case should contact the Crime Stoppers hotline at 1-800-577-TIPS, or text CRIMES and then enter TIP577, or visit NYPDCrimestoppers.com.
All calls are strictly confidential.