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Features · For anyone evaluating AVRA

The two-code check

A label can carry two codes. The outside one answers anybody; the hidden one proves the pack is yours.

Two codes, two jobs #

One pack, two codes

A QR can be copied. The claim cannot.

One pack carries two codes. The visible shelf code, scanned before purchase, answers VALID and claims nothing. The hidden code is reachable only after purchase, answers GENUINE and claims the unit once. A photographed and reprinted shelf code answers SCANNED BEFORE.

  1. Shelf code, before purchase

    Anyone can scan it. It claims nothing.

    Valid
  2. Hidden code, after opening

    Scratch panel, cap seal, carton flap or pouch web. It claims the unit, once.

    Genuine
  3. A photographed, reprinted label

    The copy carries only code 1, and that code has been seen already.

    Scanned before
FIG 1.2Dual Code. The shelf code answers VALID; the hidden code claims the unit once.

The shelf code can be scanned in the shop as often as anyone likes. After buying, the shopper scratches the panel and types the code under it. That claims the pack once: a second claim of the same code says it was claimed before, which is how a copied label is found.

The details are in what each verdict means.

Last reviewed 18 Oct 2026 · Something wrong? connect@avrascan.com