(dis)arm a www.canary.is home alarm system via IFTTT and your mobile device
the most successful indiegogo campaign was about canary home alarm system (see: www.canary.is). it is working in your home network and you can control it with your mobile device. when you come home, the device is disarming. when you leave, the system gets armed. what is missing: a flic button to arm/disarm the alary system at your front door in case you phone's battery is empty or you neighbor come into your appartment...

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Anonymous commented
Most Wi-Fi security systems including Canary are pron to hacking. The best homne security systems are cellular based. PadFender is an example of Cellular Home Based Security. You can find PadFender at http://cellularhomesecuritysystems.com/