# Serial number checker/validator Sometimes is desirable to have a simple interface for customer to validate or check their serial number. The app provide such function, here are some use cases * Check if authenticity of a product - e.g customer bought the product with serial number and want to check the authenticity * Provide manual (or any other downloadable content) customer when bought the product with serial number, they just need enter the serial number to download the assets associate with the serial number ### Frontend UI The serial number checker/lookup have a frontend url \*\* The simple UI allow customer to enter serial number and get the relevant information for it ![](/files/gECKrsPWcm0jJff8T8ox) Once customer enter a valid serial number it will present the result ![](/files/SjJkPnMwCbfCZbodftqC) As indicate from the above results, it consist the following 1. Wether the entered serial number is valid or not 2. Show downloadable content if there are downloadable content associate with the serial number - [see here how to assicate download to serial number](/advance/downloadable-assets-after-submit.md#step-1-upload-serial-number-csv-with-downloadable-assets) 3. Show the product associated with the serial number - [associate product with serial numbers](/admin/settings/serial-numbers.md#upload-serial-numbers-in-csv) For more information how to manage serial numbers, please checkout [here](/admin/settings/serial-numbers.md) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.productcares.com/advance/serial-number-checker-validator.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.