Tracks 1 and 3 of the magnetic strip are unused. Track 2 contains two fields, separated by "=". The first field contains the 9-digit, BCD-encoded student ID number. The second field is 4 BCD digits and stores a "lost card" number which starts at 0 and is used to deactivate lost or stolen cards, and the school code; the school code for Virginia Tech is 249. The thin stripe near the middle was formerly used by the copiers on the fourth floor of [[Newman Library]], but newer copiers use Hokie Passport funds.