How to Buy the Right 1D/2D Verifier
Field of View
Make sure the verifier you are considering has a large enough field of view (FOV). The 1D barcode drives this; they are larger. The long dimension dictates how much FOV is required. Remember the quiet zones!
A 2D verifier is a digital camera with a specific resolution. To accurately verify a high density barcode, it must have a small enough aperture for the X dimension of that barcode. Sometimes this is reported as the “minimum X”, sometimes as the “minimum aperture”. However they report it, make sure it will handle the barcodes you need to test. If they don’t report it, look elsewhere.
Just because the verifier can test 1D and 2D symbols doesn’t mean it can verify all symbol types. Don’t assume–know what you are getting.
1D/2D symbol verification uses two different ISO specifications. Make sure the verifier you are considering is compliant to both. It should be stated in clear, simple language in the data sheet.
Different industries structure the data in their barcodes in a specific format. This is different than the ISO specification. ISO addresses the print quality attributes of the barcode, not the data structure. Make sure the 1D/2D verifier you are considering tests and reports on the industry standards that are important to you.
Be clear about periodic ISO compliance re-certification of the verifier. Is return-to-factory required? How long does it take? How much does it cost? Are self re-certification test kits available? Beware of verifiers that claim to not need calibration or re-certification.
If the sales rep in Albuquerque gives you the best deal, but you are in Zanesville, on-site support will be challenging. Verifiers are technical risk management devices, not commodities. Buy smart for the long haul, not just price.
Ask if there is local support. It might be more regional than local, but that’s still better direct from the manufacturer when you need help.
Demo’s and rentals
Can you try before you buy? What if somebody drops the verifier? If you have a big project and need extra equipment, will the dealer help you?
Still not sure?
Ask someone with independent experience. Sure the manufacturer or sales rep will recommend their own product. Get a second opinion from a barcode test lab—they make their living and stake their reputation on the performance of their verifiers.