You are missing that this is not necessarily aimed at regular home owners. Imagine offices, rented accommodation or as a secondary lock for homes. Being able to offer and revoke keys over the air is huge.

This isn't disruptive to household locks, but to the high ticket price door entry systems.

But then why mobile? Why is it not just a web based app if it's meant to manage a large number of locks? Mobile is not a convenient interface, apart from things that need to be mobile.

What other devices would be an appropriate replacement for a key other than a mobile phone? (or do you mean a mobile web app?)

eg: using keyfobs = a) regularly lost, b) regularly forgotten, c) small expense every time you give to people, d) never get them back.

It's still pointless. The current key-system is a low tech, simple system with few associated costs and no major pain points. It's also a system that is strongly in place already. The Lockitron is a complicated system with many moving parts that will break every now and then, and that has no clear target market, and it's more expensive than current systems.

If the makers get it to work, I'd be happy for them, but my estimation is that it's going to be dead in a couple of years.

Getting rid of a key in my pocket would be a big win. Once the lock can be controlled via the Internet, it would enable things like location sensing (so my door would unlock for me, or whatever)

I would love this to replace my Volvo key. It's as big as the iPhone (kidding - but, it is big)

You're being remarkably negative ;)

There are numerous problems with the market, that IMHO, Lockitron is attacking (which is not the residential market)

Why wouldn't ever office to lease use this over elaborate and expensive key entry systems?

Offices use RFID key fobs with local, dedicated hardware. An internet connected mobile phone based entry system is too complex, and will have particular difficulty integrating into the existing supply/service chain for these kind of systems.

We really, really don't need mobile phone based key unlock systems. I een considered building one for our home, but diacarded the idea due to the user experience complexity of having to use my phone instead of a simple key (but still carrying a key in case of failure).

As for Airbnb users, all you need is a programmable keypad (or an RFID entry system.)

This is a solved problem.

I' m remarkably negative because it's a bad idea. I'm not going to pretend to like the idea to spare someones feelings. To my uninformed judgement, it's something that will not work.