Originally Posted by dswallow

While I was at my interview I overheard another officer explain that fingerprints aren't usually developed enough until about age 4 so until fingerprints can be collected, those folks can't use the fingerprint reader but do just come up to the front of the regular line for their photo to be reviewed by an agent. He also said that once the kid turns 4 or so they should just come back to the interview center and wait for an officer to come out for those with appointments and let them know you're there to have a child's fingerprints added to their records.