A POS system allows your business to accept payments from customers and keep track of sales. It sounds simple enough, but the setup can look and work differently, depending on whether you sell online, have a physical storefront, or both. A point-of-sale system used to refer to the cash register at a store.
software specifications:
It supports offline mode, which allows you to accept payments even if Wi-Fi is down. You just need to reconnect to the internet within 24 hours to upload any offline transactions.
It complies with the Payment Card Industry Data Security Standard (PCI DSS), which means it meets the highest level of security for card transactions.
It offers features such as items and services, item modifiers, discounts, tips, taxes, receipts, refunds, and more. You can also customize your checkout screen and add quick actions for faster transactions.
It integrates with other  products and services, such as Square Online, Square Marketing, Square Loyalty, Square Payroll, Square Capital, and more. You can also connect to third-party apps and hardware accessories to enhance your business operations.