I started to develop IP Geo Block as a security purpose plugin
so as to protect the back-end of the site. And since version 3.0.0, it has been
equipped with the functionality of front-end protection based on this
suggestion at support forum.
This helped to greatly improved the protection ability of this
plugin against the attacks via front-end of the site.
Need for content filtering by country
Meanwhile, this also helped to make the purpose of this plugin ambiguous.
Because the function of this plugin to specifing the validation target with
the page, post type, category and tab is not enough for a user who wants to
manage contents by Geo-blocking.