Scan a barcode, press Enter, and the sale is done: that is the whole rhythm of NodeDR POS at a shop counter. A USB scanner works, and so does a phone or tablet camera. Each sale can carry tax breakdowns with GSTIN and HSN codes, percentage or flat discounts, loyalty points, store credit, and customer dues for short payments. Cash, UPI with a payment QR, and card are supported in more than 20 currencies. Receipts print through the browser, download as PDF, or go straight to a USB thermal printer. Inventory takes bulk CSV or Excel imports, generates printable EAN-13 barcode labels, looks up unknown barcodes in free product databases, and flags low stock. Purchasing adds suppliers, purchase orders, and reorder suggestions. Orders from WooCommerce, Shopify, or a custom site flow through a New, Packing, Ready, and Collected board. Phone and laptop sellers can switch on IMEI tracking with warranty lookup. A customer display shows the live cart on a second screen. Reports cover revenue, gross profit, average bill, category mix, and busy hours, with staff roles and A4 tax invoices alongside. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.