The HomePod of the future will let you activate Siri simply by looking at the speaker

1 A new Apple patent reveals possible functionality of the next generation of HomePod. 2 Apple seeks improvements and innovations for its HomePod ...

source https://www.gearrice.com/update/the-homepod-of-the-future-will-let-you-activate-siri-simply-by-looking-at-the-speaker/