FILE - In this Oct. 21, 2009 file photo, a weathered American Express sticker on a window in San Francisco is shown. American Express Co. on Wednesday, Nov. 18, 2009 announced it is buying Revolution Money for about $300 million to keep up with trends in electronic payments, where new security features and online transaction options are shaking up traditional models. AP Photo logo AP Photo 28 months ago

FILE - In this Oct. 21, 2009 file photo, a weathered American Express sticker on a window in San Francisco is shown. American Express Co. on Wednesday, Nov. 18, 2009 announced it is buying Revolution Money for about $300 million to keep up with trends in electronic payments, where new security features and online transaction options are shaking up traditional models.