POS:
Point Of Sale System for Magento 2: A complete Web-based POS solution for managing multiple physical stores, retail outlets at different locations and sync data (sales, order, inventory, products) with an online store. Cashiers can scan barcode labels, manage customers, take offline orders, give custom discount, split payment (card swipe/cash), apply coupon/voucher code, cart-on-hold, print sale receipt. Magento 2 POS system is a bridged solution for managing online and physical store inventories.
Documentation:
https://webkul.com/blog/magento-2-point-of-sale/
Demo: https://magento-pos-demo861912220.webkul.com/demomanagement/viewdemo/index/demoid/1/