DS640 A4 Personal Document Scanner Scan and go with the DSmobile DS-640. Ideal for scanning single-sided documents when on the move or when you have limited desk space. Make scanning, saving and sharing your documents effortless. The small, compact design, makes the DSmobile DS-640 ideal where space is limited. Whether on a reception desk or when you are out of the office, reducing the amount of paperwork and ensuring document security is always key. A great choice for reception areas, small offices and working on the go.