The video makes Otto, a size compatable lock cylinder replacement, look very attractive. I've been waiting for something like this. However, what I've noticed is that electronic locks for consumers are uniformly less secure than say a Medico deadbolt. Medico deadbolts resist picking, bumping
and physical assault (e.g. a large pipe wrench applied to the front or attempts to drill the pin line). I hope Otto has similar capabilities.
For those fascinated by locks, I recommend bosnianbill on youtube: https://www.youtube.com/user/bosnianbill