Square recently released an improved, redesigned card reader. Current Square users will need to request a new one.

Learn how to use Square to accept credit card payments in person or online. Step-by-step guide for setup, hardware, invoices and more.

Our comprehensive review of Square's card reader, point of sale equipment, and software. Find out if it’s right for your small business.

Headline updated to acknowledge that Square is a US-only service for now. Remember the Square card reader and payment service from our first hands-on video in January at Macworld Expo 2010? Square ...

Square is a leading payment platform for businesses. Follow our guide to set up your account, accept payments, and manage transactions easily.

Square’s hugely practical card reader can be used on its own or to supplement your static business by allowing the processing of mobile card or contactless payments on the go.

For a product like the new Square Reader–a sleek update to the familiar credit card-swiping dongle that's nearly twice as thin as its predecessor–most of the design work is out of sight.