It's the biggest week in payment technology since Apple Pay was introduced last year, and the changes could have a long-term impact on how you buy goods and services in stores.
Samsung Pay - News, Features, and Slideshows
Will Android Pay dominate the market for mobile payments and go head to head with Apple Pay? Currently, it is looking unlikely.
"Upbeat projections for Android Pay are in sharp contrast to the current position of Google Wallet, which, after four years, is still largely confined to the US..."