Responses
That’s what I’ve been thinking too (that the name tag isn’t as important piece of evidence as you’d think because it’s been too long) but the whole idea behind it is reminding me of the show The Glory. In that show a name tag was so important as well that people blackmailed and whatnot over it. Maybe it’s more “important” in Korean judicial system?

In the court of law, the name tag is basically useless rn, but Museum is a first hand Witness. The problem is how he's gonna prove he was there. Maybe the name tag can help, but his credibility would be rock bottom for taking this long