I installed a punch code deadbolt on our front door. It has been a life-changing experience. I need neither phone nor keys and never worry about being locked out. I just have to replace the batteries every couple years.
One of the biggest improvements, not offered by the Lockitron, is the lack of needing to fumble in your pockets for anything. If you've got a handful of groceries, it's much easier to shift a bag or two to get a hand free and punch the code than it is to go digging in your pockets.
> One of the biggest improvements, not offered by the Lockitron, is the lack of needing to fumble in your pockets for anything
Did you watch the full video? This version of Lockitron has proximity-based keyless entry like some cars do. No need to reach into your pockets or punch in a code.
Near the end of the video they demonstrate their newest feature: automatic proximity unlocking via BT 4.0. So in the "hands occupied by groceries" scenario you described, using the Lockitron would be even easier than a punch code.
One of the biggest improvements, not offered by the Lockitron, is the lack of needing to fumble in your pockets for anything. If you've got a handful of groceries, it's much easier to shift a bag or two to get a hand free and punch the code than it is to go digging in your pockets.