How does the wristband identification system work?

The wristbands have 3 ways of linking the owner to his or her GO|STAY|KIT®. Each Kit comes with its own I.D. number, which is printed on the wristbands-and the page containing the wristbands. Although the individual wristbands can be removed, the wristband page should never be removed from the GO|STAY|KIT®. The user can also write his or her name on the wristbands. Once inside an emergency shelter the (Code 39) barcode can be scanned (using a commercial grade barcode scanner.) This shows the printed I.D. number specific to each GO|STAY|KIT®, which can also be downloaded into the emergency shelter’s database, if available. Currently, smartphones will not scan a (Code 39) barcode.