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Methods of protecting a form from spam without captcha
All methods of combating spam attacks have one common drawback: they become obsolete. of protection, bot developers try to find loopholes in them, so it is important to be on the alert. Below we will tell you which methods are still working, and which are no longer reliable.
Set time limits for filling out the form
Robots enter data instantly, while a person needs some time to type a name america phone number list and email. According to this logic, you can cut off bots at the stage of filling in the fields.

But it's not that simple: many browsers have a function for autofilling forms. The user does not waste time entering an email, which means the script can consider him a bot. In addition, most bots can already fill out forms at the same speed as a person. So this method can be used as an addition to the others, but do not expect that it will cut off all robots alone.Add hidden field
The logic is this: a person sees two input fields on the site (name and email). Although in fact there is a third field hidden in the code.

The robot scans the site code, not the outer shell, so it sees this field and fills it in. And thus lets the script on the site know that it should not accept data from this user.

It would seem to be a fail-safe method of protection. But the bot will try to send data through the form in all possible combinations: fill in some fields and leave others empty, alternate their contents, and so on. One way or another, it will pick a way to send data and break your protection, so the method is unreliable.