Top-tier grocery store POS systems are able to keep your inventory numbers accurately and up-to-date, thereby reducing the risk that your customers will not only be disappointed, but possibly choose to shop at another store. To stay competitive, inventory tracking should also help you see what products are the most popular. Knowledge of this helps you stay ahead of the competition and sell products you know your customers buy regularly. Along those lines, you'll want software that identifies the best suppliers available in your area who can deliver the products quickly and at the best price.