# Serial number checker/validator

## Overview

Sometimes it is desirable to have a simple interface for customers to validate or check their serial numbers. The app provides such functionality. Here are some use cases:

* Check the authenticity of a product - e.g., a customer bought a product with a serial number and wants to verify its authenticity.
* Provide manuals (or any other downloadable content) to customers who bought a product with a serial number. They just need to enter the serial number to download the assets associated with it.

### Frontend UI

The serial number checker/lookup has a frontend URL:

```
apps/product-registration?action=snlookup
```

The simple UI allows customers to enter a serial number and retrieve the relevant information.

![](https://4168782644-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fm4vguP4EvKgU8vwxKCJR%2Fuploads%2Fgit-blob-45536944b09a01aa4b6c38a85275f131954d8ec0%2FScreenshot%202022-04-06%20at%2020.26.19.png?alt=media)

Once a customer enters a valid serial number, the result will be displayed.

![](https://4168782644-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fm4vguP4EvKgU8vwxKCJR%2Fuploads%2Fgit-blob-12887f1362c9e3a24d4b2f3d2f04fde627fcf58f%2FScreenshot%202022-04-06%20at%2020.25.51.png?alt=media)

As indicated by the results above, the following information is provided:

1. Whether the entered serial number is valid or not.
2. Downloadable content associated with the serial number, if available - [see here how to associate downloads with serial numbers](https://doc.product-reg.varify.xyz/downloadable-assets-after-submit#step-1-upload-serial-number-csv-with-downloadable-assets).
3. The product associated with the serial number - [associate products with serial numbers](https://doc.product-reg.varify.xyz/admin/serial-numbers#upload-serial-numbers-in-csv).

For more information on how to manage serial numbers, please check [here](https://doc.product-reg.varify.xyz/admin/serial-numbers).