American Express is going contactless with a new way to make everyday purchases. The giant credit card issuer has been testing its “ExpressPay” key chain attachment that uses radio frequency technology, for the past year. Users simply hold the “ExpressPay” key fob next to a companion reader at checkout to make purchases. Payment is authorized in seconds and no signature is required. Under the program, consumers have the option of funding “ExpressPay” in two ways: either as a direct link for payment to an American Express Card or as a pre-paid product linked to any major credit, charge or debit card. “ExpressPay Direct Link,” with a daily spending limit of $150, links to any consumer American Express charge or credit card for payment. “ExpressPay Pre-Loaded” can be pre-paid up to $600 monthly using any major credit, charge or debit card and can be automatically reloaded from the same payment source when the balance goes below $20. American Express has been testing the new product in Phoenix, New Jersey, and New York City. No date for a national launch has been set.