I think the idea is this is to help you remember whether or not you're at home right now.

It is a 100-minute print, but I guess it might help a lot of people who sometimes aren't sure whether or not they're at home.

@hotdogsladies I think it may be intended for someone else to know if you are in or not home. Presumably if you live somewhere big enough that it isn’t obvious.

@Jhereg @hotdogsladies

And it's for housemates that are *really dense*, as wouldn't the presence of the keys show them that you're home? 🙄

...

Of course, professionals would use a formal check-in/check-out system:

https://www.msha.gov/sites/default/files/Announcements/check-in-check-out-system.pdf