(Image credit: Apartment Therapy )
Lockitron$149.00 (Pre-order price) • Lockitron

A friend and I got into a debate this morning about the Lockitron, an add-on deadbolt system which allows for remote opening and locking of doors using an app. He proclaimed it a "necessity" for his extended family and friends who regularly drop by; I consider it an example of an "automated luxury". But we both agreed Lockitron could be very convenient for granting access remotely with just a swipe...the simple design is tempting whether a necessity or luxury. And the best part is it fits over your existing deadbolt rather than replaces it, making installation simpler than other keyless entry systems.