Transactions: Amex, Knot launch card-on-file solution

American Express and card-on-file management company Knot are launching a card-on-file payments solution to improve the payment experience at trusted retailers.  “Amex has integrated with Knot’s CardSwitcher technology, which allows eligible card members to quickly and securely provide their payment information to participating merchants directly through the Amex website,” Stephanie Schultz, vice president and head […]