Who used which application?

Shahid Shah tells us that eXpert Technology Solutions has a solution for the hole in the Citrix product line:

As we know, Citrix is a thin-client application enabler: it can take a “fat client” windows application and through a small client application (or just a browser) on a client PC it can run an entire application from just a server and use the display/keyboard/mouse from the client. Eric and his two other co-founders set out to plug an important hole in Citrix’s product line: detailed analysis and reporting of who used what application, for how long, and whether they were supposed to be able to or not. While Citrix eases the administration burden of having to install applications on multiple computers, it doesn’t ease the administrators burden of reporting to upper management.