When an adhesive timing cover is applied to the front of the badge, a color change appears in a half-day (4 hours) or one-day (8 hours) so the badge cannot be reused. No need to worry about unauthorized re-use of uncollected badges. Patented color change is highly visible from a distance. Perfect for students who forget their school ID.
- Manual Expiring TIMEbadge BACKpart "Substitute".
- BACKpart must be used with Timing Cover for it to expire.
- Can be written on.
- Size = 2" x 3".
- Sold in packs of 1000.
- A product of TEMPbadge ©.