In the Google Maps app there is a button that lets you confirm/check-in your visit at a business. Also, you can confirm visits in the Timeline feature. I don'

In the Google Maps app there is a button that lets you confirm/check-in your visit at a business. Also, you can confirm visits in the Timeline feature. I don't know why those features are there or what Google is using the information for, but it seems like it could be used to verify businesses by crowd-sourcing.