Visa and Mastercard maintain the most payment card acceptance locations worldwide versus all other card brands. At year-end 2018, acceptance locations reached 52.9 million including in-store outlets, websites, ATMs, and bank branches. Growth continued in physical merchant locations in Asia, Latin America, the Middle East, and Africa. There was significant growth worldwide in online sites including merchants adding web sales to complement their in-store operations. And growth continued among merchants using smartphones to handle card payments. While smartphones as POS devices will continue t...