The card details were allegedly stolen from three firms, including 7-Eleven
US prosecutors have charged a man with stealing data relating to 130 million credit and debit cards.
Officials say it is the biggest case of identity theft in American history.
They say Albert Gonzalez, 28, and two un-named Russian co-conspirators hacked into the payment systems of retailers, including the 7-Eleven chain.
Prosecutors say they aimed to sell the data on. If convicted, Mr Gonzalez faces up to 20 years in jail for wire fraud and five years for conspiracy.
He would also have to pay a fine of $250,000 (£150,000) for each of the two charges.
Mr Gonzalez used a technique known as an "SQL injection attack" to access the databases and steal information, the US Department of Justice (DoJ) said.
The method is believed to involve exploiting errors in programming to access data.
Full story: BBC News