Will the mobile phone replace the credit card? It sounds a bit like science fiction, but it appears that mobile carriers are trying to make it a reality.

Bloomberg reports that AT&T, Verizon, and T-Mobile USA are "planning a venture to displace credit and debit cards with smartphones". The companies would work with Discover Financial Services and Barclays Plc to test a system starting in Atlanta and three other unnamed U.S. cities.

Last month we saw MasterCard make a move to start gunning for PayPal. Now it’s Visa. Visa has launched a new payments service called PayClick in Australia, but reportedly has "a view" for global markets.

Visa is sponsoring a campaign for Children International called "Click for a Cause" that will give new books to kids in need.

The "Click for a Cause" campaign allows people to click a button to trigger a $1 donation from Visa to purchase books for children living in poverty. Visa will provide Children International, a U.S.-based humanitarian organization, up to $50,000 toward the purchase of books to be placed in Children’s International’s nearly 100 libraries serving children in 11 countries.

Visa is sponsoring a campaign for Children International called "Click for a Cause" that will give new books to kids in need.

The "Click for a Cause" campaign allows people to click a button to trigger a $1 donation from Visa to purchase books for children living in poverty. Visa will provide Children International, a U.S.-based humanitarian organization, up to $50,000 toward the purchase of books to be placed in Children’s International’s nearly 100 libraries serving children in 11 countries.

Visa is sponsoring a campaign for Children International called "Click for a Cause" that will give new books to kids in need.

The "Click for a Cause" campaign allows people to click a button to trigger a $1 donation from Visa to purchase books for children living in poverty. Visa will provide Children International, a U.S.-based humanitarian organization, up to $50,000 toward the purchase of books to be placed in Children’s International’s nearly 100 libraries serving children in 11 countries.

Visa is sponsoring a campaign for Children International called "Click for a Cause" that will give new books to kids in need.

The "Click for a Cause" campaign allows people to click a button to trigger a $1 donation from Visa to purchase books for children living in poverty. Visa will provide Children International, a U.S.-based humanitarian organization, up to $50,000 toward the purchase of books to be placed in Children’s International’s nearly 100 libraries serving children in 11 countries.

Visa said today it has agreed to buy online payment processing firm CyberSource in an effort to strengthen its ecommerce business.

Visa said it will pay $26 a share or about $2 billion for CyberSource. The deal is expected to close in Visa’s fiscal fourth quarter. The transaction will dilute Visa’s earning for that quarter by about 4 or 5 cents a share.