This app was mentioned in 3 comments, with an average of 1.00 upvote
I have been touching the app and the server this weekend with the programmer fever. I put it online because is really difficult get beta testers, however I don't know if it works ok jet. Let's call this an aggressive beta testing, it will work at first try, politic.
Anyway thank you and here is the link to the app:
https://play.google.com/store/apps/details?id=com.bitexception.thirdeye
And the receiver app is here:
I found this app that use an android with gyro to do the trick and it works fine. https://play.google.com/store/apps/details?id=com.bitexception.thirdeye
This is the cheapest I have found.
Have you tried https://play.google.com/store/apps/details?id=com.bitexception.thirdeye ?
It is free and do the trick with an android mobile.