Slap your forehead now.
.......
Me: Give me your JID number, please.
Juror: I don't have on of those. Can you look it up another way?
Me: You have your summons right?
Juror: Yes.
Me: Ok, look at your badge. Your JID number is at the top, underneath a bar code. See it?
Juror: No, I just see J-I-D in parenthesis.