The most frequent use of caps lock that I noticed is from stupid people that refuse to use shift for some reason (accessibility issues excluded - they are perfectly able to use both hands). This is also highly correlated with very slow peck-typing.
The only use for it that I can see would be for accessibility reasons, but then it should be an opt-in feature and in fact making the modifier keys watchable is already possible.
As to what to replace it with, I don't know. I disagree with the idea of a search button. The last thing I want is a button that launches Bing (when there's already a dozen existing ways to search). The impact of pressing caps lock accidentally is much more minimal than opening Bing.
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[ 2.7 ms ] story [ 18.5 ms ] threadThe only use for it that I can see would be for accessibility reasons, but then it should be an opt-in feature and in fact making the modifier keys watchable is already possible.
As to what to replace it with, I don't know. I disagree with the idea of a search button. The last thing I want is a button that launches Bing (when there's already a dozen existing ways to search). The impact of pressing caps lock accidentally is much more minimal than opening Bing.