The toe tag reduces a person to a label, and dream books read it as feeling processed, catalogued or forgotten by an impersonal system. It can also stand for an ending made official.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.