OpenGate Open Source Hardware for Android
Very well done, however you should add extra gate buttons in the app and sketch and just tell people which pins you used, most people can interface on their own without you having to write new instructions with it. Also make integer names for the output pins so we can easily change what output pins we use. Also I found it doesn't work if I enter the local ip address of the yun for only using this over WiFi and not over the internet. Some people would like this option.
by Q####:
I like that it now works over WiFi and internet without having to choose only one of these options. However I would still like to see the option to add at least one extra gate button.