So, basically I want to trigger an action in an app by using an arduino with a Bluetooth module. The idea is that once that the arduino has been connected with the phone, I might be able to trigger actions in the app even when the phone isn’t being used and is saved in your pocket for example.
Is that possible? And if so, how can I do the code in the app? Like if it is just waiting for a message? Thanks for the attention guys.