What about being able to say "Block everything" or "Allow everything", and allow the user to default to one or the other. I would find it weird if a random blo

What about being able to say "Block everything" or "Allow everything", and allow the user to default to one or the other. I would find it weird if a random blog or ecommerce website wanted to know my battery level or device temperature, but frequently I can only block them finding out by blocking JavaScript entirely, and that often means the site doesn't work at all. So I'm caught between giving them access to all sorts of stuff which they can use to identify for me (and I have no idea whether they're doing that or not), or not using the site at all. It would be nice to be able to say "let the site execute JavaScript, but don't give access to my machine or OS data".