This system is useful for many things, and be aware that there are those who do wish to encroach into the House or if there are small children in the House, and then you're cooking behind the House. You will know immediately, preventing accidents to occur
You can allow a family member or friends can open or closed doors ban by the applications of Lockitron just enter the email address or telephone number.
Lockitron works on battery power, and connect to the Smartphone through Internet wifi, battery packs can work more than one year and if low battery, it will warn you with a message via your mobile phone.
Lockitron have price 179 dollar.