Some things aren't necessarily bad, but they depend on the situation. For example, a site might ask for your age but not verify it thoroughly. That's a yellow flag. It's not ideal, but it might be okay if they're a small business that's still learning. However, if they're a big company, they should know better. Another yellow flag is if they ask for more personal info than seems necessary. Age verification usually only needs your birth date, but if they ask for your full address and phone number, that's a bit much. It could be for shipping, but it's worth questioning.

Shipping policies can also be yellow flags. If a site ships to Japan but doesn't mention age verification at delivery, that might be a problem. In some places, the carrier is supposed to check ID. If they don't, the product could end up in the wrong hands. It's not always a dealbreaker, but it's something to think about.