Retrieving characters typed on the keyboard

Hello family,
Is there a way to get everything I type on the keyboard while the app is working in the background?
If so, which tool to use?
Thanks in advance !

Perhaps something here:

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I am working on a project (appinventor) and would like to integrate this functionality into my app, so is there an appinventor tool that allows this?

Same question asked in Kodular's community