RSS Feed/News Is there a way to fetch details about who is viewing a page?

[ENXF NET]

My addon has the following controller

PHP:

public function actionFoo()
{
    $viewParams = ['someVariableThatHoldsInformation' => <fetch the details here>];

return $this->view('Asprin\CB:Foo', 'aspcb_my_template', $viewParams);
}

Aim is to have the following in the template
HTML:

<div>
    Users viewing this page: {$someVariableThatHoldsInformation}
</div>

If I had to show users who are currently on page aspcb_my_template, how do I get that info in my controller?

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