A Google patent reveals their work on a Stylus that allows a user to write on any surface, even in the air, & only be seen in Smartglasses Patently Apple
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https://www.patentlyapple.com/2025/02/a-google-patent-reveals-their-work-on-a-stylus-that-allows-a-user-to-write-on-any-surface-even-in-th.html
A Google patent reveals their work on a Stylus that allows a user to write on any surface, even in the air, & only be seen in Smartglasses – Patently Apple
