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-This Is a question.
-When there are several users sometimes it is a lot of work to verify that records are Multiple Accounts
-Are there any supplements? Some tool that prevents duplicate users with ip
Note:It would be ideal to say that only the ideal operation is just an account registered by ip

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Firstly you can set "Rate limit for user registrations" (in Admin > Spam) to 1 per IP/hour. Of course that still means the same IP could register 24 times a day...

I don't know of any existing plugins but you could create one without too much trouble. You'll need a filter module that uses the filter_handle function. In there get the current IP, look for any users with the same "createip" in the database. If you find any then return an error.

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Thank you so much
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I don't see an option for "Rate limit for user registrations" (in Admin > Spam).
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@ranse well it's definitely there. If you are using a different language file then it will be named something different.
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