Well GPS works by sending a signal into space that gets a satellite to pin you on earth. So if you trying to turn off the ringer wile in school you would have to make a app that gets the satellite to pin you on the map then say if your in school or in like a 5 mile radius of your school to tell the app to turn off your ringer on your phone.
Your app would need;
Your Schools location, Your location, Your ringer state(On/Off), And it would need if you have school they day(Like on the weekend).
Then you just have to put it together
Talking about models, validation is the process by the model is corroborated and its outputs are compared with experimental results. From validation, it can be seen how quantitative and qualitative accurate the model is, and it can be confirmed model fidelity to the real world.
The already-long problem on hacking and other security-related cases necessitates for the application builders to check the data received from unknown sources. To further strengthen the security, even data received from known sources also need to be check as these may also contain harmful viruses creating critical problem to the application.
