title: Single IP Registration Wordpress
body: <p>Hi How can i do this in wordpress User can Register in my site one time from one IP If anyone try to create duplicate account it will not allow. I cant find any plugin to do that. One IP one Account. 
  I am using myCRED Plugin .. so when a user join they get point to do some activity ... if i cant blocked Register .. They can Register again and again and can get the product. As i give them some free point just to Register.
  Anyone have any solution please.</p>
  
  <p>I can save user ip in  <code>wp_usermeta</code> Using this Plugin Register IPs</p>