The company is now encouraging retailers to drop their cash registers in favor of the Square Register, an app for the iPad that can track inventory and take purchases on Square users tabs or with the card reader.

CNN: Square seeks to replace cash register with revamped app

These devices range from the inventory trackers that drivers use to touch base with logistics centers, or mobile credit card scanners that are increasingly popping up at shops to allow customers to buy on-the-spot rather than lugging shopping carts into check-out lines.

FORBES: A Call To Arms For Enterprise Mobile Security

Inventory your financial records, organize your paperwork, develop a spending plan and summarize your credit card debt.

FORBES: Weathering a Financial Storm