Low power WiFi can be done. I've installed sensors that run xmit WiFi and run on a pair of C cells for years. But a large concern with Lockitron is their depend

Low power WiFi can be done. I've installed sensors that run xmit WiFi and run on a pair of C cells for years. But a large concern with Lockitron is their dependence on Electric Imp. Because when Electric Imp fails, Lockitron loses access to all their customer's locks.