Tracking Logon in OS X

[RaNdOm]

I'm looking for a program that can track the users that logon to OS X and possibly how long they are logged in for. I'm sure it would have other functions, but this is what is most important. I need to track use of an instrument at work for charging purposes. There is a program called Fileguard that does such a thing, but it isn't updated for OS X; it stopped at 9.2. Any help?

[Baron58]

I'm looking for a program that can track the users that logon to OS X and possibly how long they are logged in for. I'm sure it would have other functions, but this is what is most important. I need to track use of an instrument at work for charging purposes. There is a program called Fileguard that does such a thing, but it isn't updated for OS X; it stopped at 9.2. Any help?

open the Terminal.

enter:

last

...and you'll get the historical info.

[yellow]

In addition, /var/log/secure.log holds info for logins as well..