The Socket Mobile SocketScan S840 Barcode Scanner is a fast-scanning universal device with Bluetooth wireless technology. Small, thin and easy to use, this scanner is optimized for attaching to mobile devices, enabling one-handed operation. The S840 can scan barcodes printed on labels or displayed on device screens. It can read 1D/2D barcodes and is ideal for retail point of sale, inventory management, sales order entry, field service and other mobile business applications.