CodeCanyon - Block Double Logins v1.1 - Protect Your Membership Site - 7766127

Protect your membership sites – prevent users from sharing accounts ... block users from simultaneously using the same WP account | block users from simultaneously logging in to multiple accounts from the same IP | block users who hide behind a proxy | see who’s online at any given time | see who’s trying to share their account | choose which user roles are affected by plugin’s rules and which are not | built-in fail-safe if you lock yourself out | session timeout can be adjusted | plugin is ready for use 5 seconds after install | works with all themes