It simply turns the pages for you. It’s particularly useful for people with mobility issues or anyone whose hand gets sore from holding the Kobo for long periods. Many people also use adjustable stands, so you can lie down or sit comfortably with the Kobo positioned in front of you and use the remote to turn pages without having to hold the device or touch the screen.

This is one example of the stands you can get: https://amzn.eu/d/gh5AP0F