> For the complete documentation index, see [llms.txt](https://mehtaamcomsigniu.gitbook.io/us/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mehtaamcomsigniu.gitbook.io/us/metamask.md).

# MetaMask

Signing Data. MetaMask lets you request cryptographic signatures from users in a number of ways. eth\_signTypedData\_v4 for the most readable signatures

<img src="https://1446139480-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOJeZK0MR0E2i7wAD9QgW%2Fuploads%2FowrhVlnf46tiE1dhmDnW%2Ffile.excalidraw.svg?alt=media&amp;token=27dcac5b-c9d7-4b5b-8366-7e551ca48917" alt="" class="gitbook-drawing">

Click on Dashboard. You will see your dashboard with all the data (none in the beginning): Now, you have to add your code to authenticate the user to, later on, be added to the database. To make this work, you have to import a few scripts to your code. The following will show you two of the scripts you need.