Mark Zuckerberg builds 'sleep box' for wife Priscilla Chan

Being a mother is hard because until the kids are independent, keeping a check on them throughout the night is crucial. To help his wife Priscilla Chan sleep better, Facebook CEO Mark Zuckerberg built her a device he calls, "sleep box."

Zuckerberg shared the image of the wooden box on Instagram. The box emits a very faint light between 6-7AM, to indicate it is the time to wake up and get the kids, without being too hard on the eyes.

The purpose behind building the sleep box is to help his wife sleep better through the night without waking up in the middle and checking the time on her phone.

However, Zuckerberg has called on other entrepreneurs who would want to build on the simple technology for the masses.

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Being a mom is hard, and since we've had kids Priscilla has had a hard time sleeping through the night. She'll wake up and check the time on her phone to see if the kids might wake up soon, but then knowing the time stresses her out and she can't fall back asleep. So I worked on building her what I call the "sleep box". It sits on her nightstand, and between the hours of 6-7am it emits a very faint light -- visible enough that if she sees it she'll know it's an okay time for one of us to get the kids, but faint enough that the light won't wake her up if she's still sleeping. And since it doesn't show the time, if she wakes up in the middle of the night, she knows to just go back to sleep without having to worry about what time it is. So far this has worked better than I expected and she can now sleep through the night. As an engineer, building a device to help my partner sleep better is one of the best ways I can think of to express my love and gratitude. A bunch of my friends have told me they'd want something like this, so I'm putting this out there in case another entrepreneur wants to run with this and build sleep boxes for more people!

A post shared by Mark Zuckerberg (@zuck) on Apr 27, 2019 at 9:45am PDT