If you make internet connected stuff based on Linux/GNU and own a Android device rejoice! This is a safe(as safe as it gets) way to control your projects, so unlock your home to your friends while miles away, start a car(or don’t), securely wipe all of your disks with one touch, feed the cats, or just turn your lights on and off.

All you need is:

1x rooted Android device
1x sl4a scripting layer for android
1x project that supports ssh with a dyn-dns setup on ssh port if you want direct access from the internet,and not only from wifi.

http://hacklabos.org/2014/06/using-android-to-securely-command-control-your-projects/