Square, Inc., also called Square, is a cohesive commerce ecosystem that helps sellers start, run, and grow their businesses. Once a seller downloads the Square Point of Sale mobile app, they can quickly and easily take their first payment, typically within minutes. Read More Once on this system, sellers gain access to features such as next-day settlements, digital receipts, payment dispute management, data security, and Payment Card Industry (PCI) compliance. The firm offers additional point-of-sale services, financial services, and marketing services. The company was founded by Jack Dorsey and Jim McKelvey in February 2009 and is headquartered in San Francisco, CA.