In a typical user scenario, users would carry a mobile phone
loaded with the PmEB application with them throughout
the day. After any episode of eating or physical activity,
they would enter that episode into PmEB, which would
return an updated caloric balance. In addition, users can
look up calories related to the consumption of a particular
food item, or expenditure of an activity. At the end of the
day, users can see whether their daily caloric balance is
positive or negative, and review a history of their entries.