Entering Tracking Number
The tracking number field is something the user cannot enter (locked field) and cannot change …
What is the tracking number in English?
It is the letters “CDC” followed by the computer’s hexadecimal encoding of the number of months since the creation of this program followed by the VisitID
Tracking.Text = “CDC” & Hex((12*(Year(Date)-Year(“11/20/99”)
+ Month(Date)) * 1000000 + VisitID)
The tracking number is reversible, but not easily associated with a person or a visit