Visa has signed an agreement with mobile payments providers iZettle, SumUp and Swiff

Visa has signed agreements with three suppliers of mobile mini-terminals iZettle, SumUp and Swiff to allow merchants of all sizes to accept payments Visa, using mobile technologies.
Under the agreements, iZettle, SumUp and Swiff will participate in Visa Ready Program, so that their mobile devices and software have been tested and approved for payment processing of Visa payments.