4F ALL Authentication

LegitApp Authentication's authentication process is simple and fast, requiring only 3 steps: 1. Photo Upload: Follow the in-app guide to take detailed photos of your item. 2. AI + Human Dual Verification: Your item is checked simultaneously by our advanced AI system and at least two senior authenticators. 3. Get Your Report: Once authentication is complete, an exclusive digital certificate is automatically generated. You can view the detailed results and your certificate at any time.

The results are highly reliable. We use a dual verification mechanism of "AI + Human Experts". Every item must undergo cross-verification by our AI system and at least two independent experts; a final conclusion is only issued when all inspection results align perfectly. In addition, our quality control team conducts a secondary review within 24 hours to ensure utmost accuracy.

Authentication fees start from 2 USD. The exact price may vary depending on the service level you choose (e.g., standard or expedited) and the brand. You can view the latest and most accurate pricing details on the LegitApp Authentication app or website.

For 4F ALL, the current submission guide requires: Exterior Outer (Right), Exterior Inner (Right), Heel (Right), Outsole (Right), Insole Top (Right), Back of Insole (Right), Inside Sewing (Right), Inside Label (Right), Tongue Front (Right), Tongue Back (Right), and Box Label. Use the photo examples on this page to prepare your submission.

Yes! Every item that passes authentication will receive an exclusive digital certificate from LegitApp Authentication. This certificate includes a unique QR code link, making it easy to store on your phone or share directly with buyers to scan and verify, increasing trust for secondhand resales.

Simply download and open LegitApp Authentication, and select the item's category, brand, and model. The system will then provide detailed photo instructions. Just follow the examples to take close-up shots of your item (such as logos, labels, stitching, etc.) and submit them. Our expert team will review your photos and send the results directly to your app.