There are many reasons why you might need to monitor multiple computers. Employers certainly want to keep tabs on more than one employee and many parents have several children they want to keep an eye on.
Of course, in theory, any application can monitor multiple computers by simply installing a copy of the software on each individual machine, and then sitting down at that machine to view what has been recorded. However, there are some applications that utilize a Central Reporting System ("CRS") that collects all of the data from all of the computers that you are monitoring and makes it viewable from one central login.
