Now, technologies and standards such as GS1-128, 2d, Datamatrix barcodes, and Electronic product code (EPC), enable manufacturers to identify products much more precisely than by type alone.

现在的技术和标准，比如gs1 - 128、2d、Datamatrix条形码和Electronic Product Code (EPC)，让制造商能够超越类型更加精确地标识产品。

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Such safeguards include manufacturers training their dealers and distributors to identify and handle illegal purchasers at the point of sale, developing a code of conduct for distributors, and requiring them to implement record keeping measures in order to keep guns out of the wrong hands.

CNN: Gun makers, help keep weapons out of criminals' hands