Hey man,
that's totally possible.
When a user first enters your app, present a logon screen that every user has to confirm. You can then track the date and time via UTCNOW()
An alternative without a logon screen would be, that you track Creation and Change of a Record in the table itself (via ChangeTimestamp).
You could also create an Audit Log, or a timetracking Screen, where users have to checkin first.
As you can see, there's many ways to achieve that.
Cheers
LinkedIn
Twitter
