Chestny ZNAK – Quality Control serves as a specialized verification tool within Russia's national digital marking system, designed to combat counterfeit products across various consumer goods categories. The application occupies a unique position in the market as an official government-backed solution for product authentication, operating within the mandatory marking framework implemented for pharmaceuticals, tobacco, footwear, and other regulated商品. The core functionality revolves around scanning Data Matrix codes and QR codes found on product packaging. Upon scanning, the application cross-references the cryptographic markers with a centralized government database, instantly returning verification results. The system displays comprehensive product information including manufacturer details, production date and time, batch number, and distribution chain data. Additional features include offline scanning capability, historical scan records, and product categorization for organized tracking of verified items. User experience centers on a minimalist interface with prominent scanning functionality accessible through a large central button. The design prioritizes speed and simplicity, with scan results appearing in a standardized format showing verification status (genuine/warning) and detailed product metadata. Real-world usage patterns indicate primary application during shopping activities, with users typically scanning items before purchase decisions or while verifying existing possessions. The interface supports both manual code entry and camera scanning, accommodating various lighting conditions and packaging positions. No specific user reviews are available for detailed analysis at this time, though the application maintains a high rating of 4.68 on the Android platform. The absence of published reviews suggests either limited adoption outside primary Russian markets or recent deployment within the ecosystem. The application demonstrates significant strengths in providing official, government-verified product authentication with immediate results. Limitations include regional restriction to Russian-market products and dependency on the national marking system's implementation coverage. The tool proves most valuable for consumers purchasing premium goods, pharmaceuticals, and regulated products within Russia, while offering limited utility for international shoppers or products outside the mandatory marking system.