Hands On with Bluetooth Door Locks
You're SOL if you actually lose your phone.
Personally, I'm in the habit of tapping my pockets to make sure I have my phone and wallet every time I stand up or walk through any door. I'm much more likely to leave my keys somewhere than my phone...
Performance in low-temperatures
I can't imagine all the money and time invested for this just to have a common burglar to get to your house and break in using a simple crowbar.
The point is that it's more convenient for you. Read the article. There are a lot of handy features that could make life easie...