How are the hardware and software of POS Devices connected to non-automatic weighing instruments (NAWIs) approved?

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How are the hardware and software of POS Devices connected to non-automatic weighing instruments (NAWIs) approved?

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The POS device connected to a particular non-automatic weighing instrument (NAWI) could be approved as a complete weighing system and an EC type approval certificate issued. Alternatively, the hardware and software of the POS device could be examined and tested separately and a Test Certificate issued. The advantage of having Test Certificate issued is that the connection of the POS is not limited to a particular NAWI as the Test Certificate state that it may be connected to any compatible NAWI which is allowed in its Type Approval Certificate to be connected to a POS. There are requirements for the software security for POS devices. NWML should be contacted at an early stage in the design and development process so that these requirements can be met.

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