Contemporary mobile hardware does not significantly differ in capabilities from agent Bond's gadgets from just a few years ago. Your mobile phone is equipped with all kinds of sensors that you can use in your mobile apps, including location, orientation, motion, ambient light, microphones, speakers, cameras, and plenty of other hardware that you can control.
An app is immersed in the operating system, which is in charge of every aspect of an app execution. In your code, you can respond to different app lifecycle events such as start up, switching to background execution, moving back to the foreground, or app termination. In the end, it is all about responding to different events sent by the operating system and invoking operating system APIs. The FireMonkey library encapsulates access to common mobile operating system functionality through specialized...