What is an iframe?
An iframe is short for an inline frame. An iframe is part of a script which embeds an external website within the code or "frame" which you are creating.
An example of when you would use an iframe is when you want to add a YouTube video to your site. Your code for a YouTube iframe may look something like this:
<iframe width="560" height="315" src="https://www.youtube-nocookie.com/embed/-mNp3-UX9Qc?controls=0" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
The following iframe would embed a YouTube video within your website.
Does Noibu Track iframes?
In short the Noibu script does not track data within an iframe. More succinctly, the Noibu script tracks errors on your page in the form of network errors and script errors. It will not track any of the information on the actual page within the iframe.
However, if you have code which is manipulating elements of an iframe on a page which Noibu script is deployed if the code throws an error Noibu will pick it up.