What's direct part marking? Direct your attention to this Code Blog about DPM and scanners.
Amazon.com : Zebra DS3608-DP (Direct Part Marking) Ultra-Rugged Handheld Corded DPM 2D Barcode Scanner (DP, 1D, 2D, PDF417, QR Code and OCR) with USB Cable : Office Products
MS842DPM 2D Imager DPM Scanner │ Unitech
CipherLab 2564 Rugged Wireless 2D&QR-code scanner with tether plate, DPM + Cradle + USB Cable, Bluetooth | CODEWARE
Direct Part Marking (DPM) | DPM Solutions From VisionID
Amazon.com : Yanzeo E9820HD Industry High Precision Direct Part Marking Barocde Reader Ultra-Rugged DPM 2D/1D Waterproof Barcode Scanner Kit DPM,PDF417 QR Code USB Cable : Office Products