GS1 Verify & GEPIR: Xác thực Barcode trực tuyến

GS1 Verify & GEPIR: Validating Barcodes Online

GS1 provides two key online tools for validating barcode numbers and looking up the companies behind them: GS1 Verify and GEPIR (Global Electronic Party Information Registry). These tools help businesses confirm barcode authenticity and resolve data disputes.

GS1 GEPIR

GEPIR is a distributed global directory that answers the question: "Who is the owner of this barcode number?"

How to use GEPIR (gepir.gs1.org):

1. Enter a GTIN, GLN, or SSCC
2. GEPIR queries the relevant GS1 Member Organization
3. Returns: Company name, address, contact information, and GS1 prefix details

GEPIR is useful for:

• Verifying that a barcode number belongs to a legitimate GS1 member
• Identifying the company behind an unknown product barcode
• Resolving disputes about product authenticity

Limitations: GEPIR returns company-level information, not product-level data. It cannot tell you the product name or description associated with a specific GTIN.

GS1 Verify

GS1 Verify (verify.gs1.org) is a newer service that provides richer validation:

• Barcode validation: Confirms the GTIN format and check digit are correct
• Company lookup: Identifies the GS1 member who owns the prefix
• License status: Shows whether the GS1 membership is active
• Product data: Shows basic product information (when available in GS1 registries)

Validation Steps

When you receive a barcode you want to verify:

1. Check the format: Is it a valid space." data-category="1D Linear Symbologies">EAN-8 barcodes." data-category="GS1 Standards & Identifiers">GTIN-8, UPC-A barcodes in North America." data-category="GS1 Standards & Identifiers">GTIN-12, EAN-13, the global standard." data-category="GS1 Standards & Identifiers">GTIN-13, or ITF-14 barcodes on cases and pallets." data-category="GS1 Standards & Identifiers">GTIN-14?
2. Verify the check digit: Recalculate using the Modulo 10 algorithm
3. Look up the prefix: Use GEPIR or GS1 Verify to confirm the company
4. Check license status: Ensure the GS1 membership is current (lapsed memberships may indicate unauthorized use)

Common Issues Found

• Invalid check digit: Indicates a data entry error or counterfeit barcode
• Unregistered prefix: The barcode uses a number range not assigned by GS1
• Lapsed membership: The company's GS1 registration has expired
• Prefix mismatch: The company selling the product does not own the prefix

GS1 Registry Platform

GS1 is building a global registry that will link GTINs to product master data, not just company information. This platform will enable:

• Product-level lookup by GTIN
• Verification that a GTIN is allocated to a specific product
• Access to basic product attributes (description, brand, images)
• Integration with GS1 Digital Link resolution

API Access

For programmatic validation:

• GS1 Cloud: API access to verified product data by GTIN
• GEPIR API: Available for GS1 member organizations
• Open Product Data: Community-maintained databases (less authoritative)

Recommendations

• Validate all incoming GTINs from new suppliers before listing products
• Periodically re-verify your trading partners' GS1 membership status
• Use check digit validation as a first filter before expensive API lookups
• Report suspicious barcodes to GS1 for investigation