Easy to setup with no startup costs. POS and merchant-services specific to business type, such as retailers. Free card reader. Cons Customers report holds on accounts and funds. Not cost-effective for ...

Mobile payments company Square is known for its signature glossy white credit card readers that plug into iPhones, iPads and Android devices. Credit cards in the U.S. will have embedded computer chips ...

Square and PayPal both have mobile credit card readers that storefronts can use to ring up payments, but Amazon is getting in on the action with a card reader of their own for iPhone. The giant online ...