Reminds me of my childhood :-)
In high school we used to play card games. I was wearing glasses. The others (the smart ones only) could see my cards in my glasses, until I learned how to hold my cards properly and hide them.
This is (almost) the same as looking at how someone types with their hands to estimate what they're typing, just a bit ~~less~~ more precise.
It sounds like it is potentially more precise. You can use software to extrapolate the input without the typer realising their typing is being watched.
Whoopsies I meant more rather than less.
I don’t see how this is any different then standing behind someone who is typing and watching them type on a physical keyboard. If you allow someone to see you typing, there’s no security involved there.
That said, there should be an option (if there’s not one already) to turn off the creepy external googly eyes feature.
In this case the difference is that you don't need to be in the same room as the typer
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