It allows you to track your mood during different activities and different times of the day.

The team used census data to track individual manufacturers during most of the 1970's and 1980's.

I do not mind being tracked during my normal browsing.

The companies from north Arkansas are even harder to track during this period.

Payne has claimed to have tracked several hundred tornadoes during his career.

No other personal statistics were tracked during the 1944-45 basketball season.

These guides tracked the dramatic increase in such institutions during its period of publication.

The casino table tracks real-time player statistics during game play.

The researchers tracked hormone levels in 18 healthy women during and after pregnancy.

Students were able to use the "trading pit" from where they could track their trades during class breaks.