In the company that I'm working, we have an access control system. Everyweek, we get a very simple report which is like this:
DataIDDATE-TIMEEMPLOYEE187733/9/2012 8:45Employee 1187583/9/2012 10:41Employee 3187443/9/2012 11:27Employee 2186953/9/2012 16:49Employee 1186933/9/2012 17:06Employee...