Janis Elsts

Normally when you login to your blog WordPress will create a session cookie that is used to authenticate you. If someone was to steal the cookie they would be able to use it to get full access to your blog without having to know your password. This plugin prevents that from happening – it makes the cookie specific to your IP address, so it won’t be usable from a different computer.
Use this plugin if you have a static IP. If you have a dynamic IP address and it changes often you will get logged out frequently.
A bit more info can be obtained from the <a href="http://w-shadow.com/blog/2008/07/12/safer-cookies-plugin-for-wordpress/" title="Safer Cookies homepage" rel="nofollow ugc">Safer Cookies homepage</a>

Safer Cookies

Ties the WP session cookie to your IP address so that it can't be used to get access to you blog from another computer.

activity-log.com

Plugin will track accurate activity time on specific page, very useful for cases like content reading time, stream or video watching time, 
tracking time in LMS online learning system, working time for writing or editing elementor templates, pages editing time, post editing time and similar.
Build as extension of WinterLock functionality for Accurate Sessions Time Tracking
Features:
<ul>
<li>User time spent duration per page</li>
<li>Tracking activity time</li>
<li>Tracking working time</li>
<li>Tracking editing time</li>
<li>Tracking writing time</li>
<li>Tracking visit time</li>
<li>Tracking time on page</li>
<li>Tracking reading time</li>
<li>Tracking user time</li>
<li>Tracking elementor working time</li>
<li>Accurate session time tracking</li>
</ul>

WP Sessions Time Monitoring Full Automatic

Plugin will accurately measure all activity time per page and user like working time, reading time, watching time, sessions time for specific user on  …

Safer Cookies vs WP Sessions Time Monitoring Full Automatic