Visa plans to launch Checkout, its latest effort to crack mobile and online payments, in 16 countries by end-2015, following an initial deployment in US, Canada and Australia in July last year.

This year’s rollout includes Argentina, Brazil, Chile, Colombia, Mexico and Peru, giving a good representation for South America.

Sam Shrauger, Visa’s SVP of Digital Solution, said the service has “seen tremendous growth” in the three markets in the months since launch, without giving out user numbers.

Asia Pacific will have a presence in the shape of China, Hong Kong, Malaysia, New Zealand and Singapore in this year’s rollout. South Africa and United Arab Emirates are the final two target markets.

Checkout is offered by Visa Inc, a separate entity to Visa Europe.

The payment app is designed to make it easier for consumers to pay using a PC, tablet or mobile phone. Consumers store their shipping and payment information in a secure account with Visa once, and they don’t have to re-enter it again when shopping online.

When a user sees the Visa Checkout button as a payment option, they log into their account, enter their username and password, and click a button to complete the transaction.

Visa has not released any recent user numbers for Checkout.

During a Q4 investors’ call last October, the card giant said it has attracted more than 1.9 million registered users, as well as signing up over 200 financial institutions since launch.