Looking for any feedback on a product prototype

Hi :) there

I am thinking about creating a wearable device that could track your attention when you’re using the computer, such that it provides simultaneous input to the computer to execute timely the action you want, like left-clicking the mouse for closing down the browser.

I believe this is theoritically possible by collecting and analyzing the brainwave data collected above the skull (non-invasive, without surgeries), but I am unsure if the existence of such a thing (which automates the execute of user demands on the computer in a hand-free way) is desirable for the general populations who aren’t disabled.

Is it in any way can you imagine such a decive would prove to be more advantageous than traditionally engaging hands for using the computer? Do you want to wear such a device for work on office? Thank you so much for feedbacks!