You may be able to achieve this with an eye-tracking layer. Although it may be mirrored depending on the perspective. Could you doodle an example of what you want to achieve?
Something like this: https://twitter.com/Margikrap/status/1447680669031747587 (this is actually how i found out about HONK :D ) No idea what other tool this person is using tho. But it'd be nice to have a single app for everything.