We'll work on the ID number display - for those who asked about stickers... you might consider making your own.
The folks at Make Stickers
sell small quantities of customizable stickers and they are reasonably priced. You can choose the size and colors you like
Here's an example:
Here's a link to the Oval maker
“You have brains in your head. You have feet in your shoes. You can steer yourself any direction you choose.” -- Dr. Seuss
Wash your hands, flatten the curve - we can do this!