Braintree provides payment acceptance to many (most?) of the most popular online and mobile merchants, like Uber, Fab, HotelTonight, LevelUp, etc.

FORBES: Tokenization And The Collapse Of The Credit Card Payment Model

As soon as this came to our attention, action was taken with the suspension of Visa payment acceptance to the site remaining in place.

FORBES: Visa Shuts Down Card Payments To WikiLeaks--Again

This reinforces the company's open approach to payment acceptance, which gives businesses the freedom to accept new forms of payment and work with the traditional payment provider of their choice, all from one device.

ENGADGET: Leaf unveils next-gen LeafPresenter Android POS tablet for taking payments

Following acceptance for payment of shares in the tender offer and completion of the transactions contemplated in the merger agreement, 3PAR would become a wholly-owned subsidiary of Dell.

FORBES: Luckless Dell Holds Onto 3PAR With $1.8 Billion Bid (Update: HP Counters With $2 Billion)

The most immediate ones, says Visa's Mr Keeley, are bad payment infrastructures and limited card acceptance by vendors.

ECONOMIST: Consumer finance in Asia

Tim Hortons' new all-in-one PIN pad technology supports all methods of payment on one device, including chip and pin, tap and swipe payments for acceptance of Tim Card, debit cards, credit cards and now mobile payments.

ENGADGET: Rogers and CIBC kick off Canadian NFC-based mobile payments with mini event (update: full details)