I like it being touted as a "productivity" tool.

Don't you already have a door? With a lock? A mute button? OK, maybe those aren't cool, but don't you have a piece of paper, pens, markers and some time to design your own DND signs with your kids? $50 still seems like a lot. We don't have to buy something to deal with every little inconvenience in our lives when what we have on hand + maybe a tiny bit of creativity can probably suffice.

Do you have kids? Have you ever tried locking a door with a little one? Lol

Also, yes I've made signs. It's easy to forget to hang them.

[Insert knocking for 10 minutes straight, followed up by a request for (insert random object here)]

I got a 2-pack of do-not-disturb doorknob hangers (similar to the ones in hotels) from Amazon for $10.

Worked great with my kids for 2 months. Then they got used to it and barged in anyway. The same would happen with this gadget.

And that's what makes it Juicero level.

This is the boutique designed not-in-china version. If it proves successful, a $50 Chinese knockoff will be along soon enough. You can vote with your wallet and say fuck these guys for having a good idea and working on it and buy the cheap Chinese crap version when it's available if you'd rather.

uhh quite the opposite, this is made by Flipper https://flipperdevices.com/