Point of Sale (POS) is the place where customers make payments for their goods and services. A retail POS system is a centralized solution to manage all retail operations at stores. In general, it consists of hardware and software.
POS software refers to the technical solution to handle sales activities and data, including:
Customers
Sales and orders
Inventory level
Marketing and promotion campaigns
Staff and shifts
Reporting and analytics
POS hardware
POS hardware is all physical devices integrated with the POS software, such as:
Touchscreen terminals
Customer-facing display
Scale for weighing items
Label printers
Barcode scanners
Credit card reader
Mobile POS systems
mPOS is a subset of cloud-based POS system so it also stores data in the cloud and offers the same benefits as cloud-based POS systems along with the following benefits:
Dedicated usage for mobile devices (smartphones, iPad, and Android tablets)
Ultimate mobility for businesses that are on the go