How can we make this, from @frog, famous?
"My standard for consent: pretend the thing I'm consenting to is being physically done by a person.
"It'd be super weird if I bought a used car & they asked me if they could follow me around.
"It'd be super weird for a stranger to ask to follow me around writing down the things I put in my grocery cart.
"If I called a taxi, it'd be super weird if the driver asked to look through my phone contacts & copy them down."