A wearable mobile scanner system processes a retail store purchase in a convenient, time efficient and reliable manner. The wearable mobile scanner system includes a forearm portion and a hand portion. The forearm portion comprises a main body member and at least one strap member and is adapted to secure the forearm portion upon a user's forearm. The hand portion comprises a central forehand member, a palm member, and a forefinger aperture, wherein the hand portion is aligned with the forearm portion and wherein the hand portion is adapted to receive a hand of the user. A trigger member is located on the forefinger aperture in communication with a USB scanner input device mounted on the central forehand member of the hand portion. A system integrated therein enables store level real-time inventory management and a fully functioning mobile POS for selling merchandise throughout the store and beyond its walls.