You don't. That's just creepy!
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Before you try you should find out if STALKING is a crime in your state. Hopefully it is.
Not really ethical but the best way would be to take one off Facebook seeing as everyone seems to be on it lately. If not wait till no one is looking and take it.
No. However, if they are on your property without permission when they take the picture, that could be considered trespassing.
It depends on the location. If someone is clearly in the public setting, yes, you can take their picture without them knowing or asking permission. But if you are in private, no, you need their permission. You have an expectation of privacy in a private setting whereas, in a public setting, you do not.
Yes, someone can take a picture of you without your consent in public spaces where there is no expectation of privacy.
When you take a picture of someone without their permission, it is called "unauthorized photography" or "invasion of privacy."
Yes
You could just smile with your mouth closed...or take a serious picture?
Yes, it is illegal to take a picture of someone's passport without their permission as it violates their privacy and can lead to identity theft or fraud.
NEVER give it anything without your vet knowing
Without knowing where you are it is not possible to say
We can't answer this without knowing where you're flying from !
In California, it is generally legal to take a picture of someone in a public place without their permission, as long as the photo is not used for commercial purposes or to invade their privacy. However, it is illegal to take a picture of someone in a private place where they have a reasonable expectation of privacy without their consent.