I love the lengths it went to explain how to flash the microSD, connect the ribbon cable for the display driver board and then skipped over almost everything different and interesting about the project.
... who would not be able to do so, given only this guide.
Otherwise, it's a fairly straightforward step-by-step setup guide. (Specifically for an IT person setting up the hardware terminal.)
The actual UI and backend are out of scope of the guide; the last step in the process is pointing the hardware at a web page that renders the UI and actually logs the punch-in and punch-out.
If I were deploying this, it makes sense - web devs and IT people can look at the main GH page to set up the backend and web app; and then they send this page to someone with only moderate technical skills to set up the hardware terminals.
For tutorials and diagrams with a comical lack of instructions between the start and end.