Drone that slides into a cell phone case?

I saw and read an article at New Atlas (formerly Gizmag) about a very compact drone that slides into a phone case. It seems it is used for selfies. It is by Air Selfie Camera.

(photo from New Atlas)

The article indicates it slides into a cell phone case. I think that makes it cool and portable.

(photo from New Atlas).

I think it makes it convenient to use and easy to bring it with you when taking selfies. I think it could also be used in other way besides taking selfies. 

They have a Kickstarter program where one can pre-order it. There are some videos at the Kickstarter page.

Here is a review of it by New Domain. Here is another by DP Review.