For the home Linux laptop (running Ubuntu 18.04), for the kids, I would like to be able to configure the computer to require answer(s) to randomly selected math problems to log in, rather than requiring a password. (For a specific user account only, for graphical login only.)
I've searched the internet but haven't found anything about this. It doesn't seem likely that I'm the first one to think of this idea, but internet searches do suggest that. :)
Security isn't an issue since the only people with physical access to the computer are all trusted. (If there is anything I should configure to disallow SSH access or for other security concerns, you could mention it, but I doubt my ISP would let port 22 traffic through from the internet anyway.)
The benefits should be obvious, but to be explicit about them - the point is that there could be a mild barrier to "getting screen time" that would involve something a little bit educational.
I am currently using Gnome with sddm as the display manager, but I don't know if that really matters.
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