FIT   100
© Copyright University of Washington 1999-2000
Entering Tracking Number
vThe tracking number field is something the user cannot enter (locked field) and cannot change …
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vWhat is the tracking number in English? 
vIt 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.SetFocus
Tracking.Locked = False
Tracking.Text = “CDC” & Hex((12*(Year(Date)-Year(“11/20/99”)
+ Month(Date)) * 1000000 + VisitID)
Tracking.Locked = True
The tracking number is reversible, but not easily associated with a person or a visit