PayPal is connected to 19.5 million merchants worldwide, and 9.5 million of those merchants support One Touch, a checkout service linked to more than 100 million of the 250 million PayPal-connected accounts. One Touch, part of PayPal Checkout, facilitates payments (credit and debit cards, bank account, PayPal balance, and more) with a single touch of a smartphone or click on a desktop—without entering username, password, or payment account information. The new PayPal Checkout with Smart Payment Buttons, which rolled out globally last month, expands Checkout by increasing payment options t...