# Adobe Acrobat 

[Adobe Acrobat](https://get.adobe.com/reader/) is a PDF reader developed and distributed by
[Adobe](https://www.adobe.com/).
It is free.

## Usage

This section addresses the usage of Adobe Acrobat.

### Adding Digital Signatures

In many office applications digital signatures are used that verify a user using a smart card.
To digitally sign first select `All tools` and `Use a certificate`.
Then select `Digitally sign` and follow further on-screen instruction.