Accessibility devices use with chalk

Hi,

Has anyone used an accessibility device with chalk?

I would like to use a separate device such as a slide advancer or remote mouse as the controller for annotating the screen.

I have paired a Logitech Spotlight device to an iPhone and enabled the accessibility setting.

I can control the placement of the spot and I am looking for what is the action to cause the chalk marks annotation to be placed.

Welcome your input!!

Thanks

Bruce Hecht

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