Creation of an event when app is open

[Goncalo_Marques]

Is possible to create a event that is triggered when a app is open?
In my app i need to register all de “UUID” that enter in app with a formula CONTEXT(“Device”) but how to do this?
My idea isto create a bot to add a line in a table when the app is opening.
Is possible to create a event that is triggered when a app is open?

Thanks in advance