Lock or unlock your doors (and see who's been in your house) via a mobile Web app. Or simply transfer the concept of the car-door key fob convenience to your home. SimpliciKey's wireless deadbolt system assigns key codes and key fobs to specific household members, and keeps track of who has come and gone. There are no subscription fees, the company says; door hardware (in three finishes), KeyCloud Internet access and two fobs are $349 to $449.simplicikey.com