The birthdate in SecureFlight commonly gets processed by AA and the the USG even when the birthdate is not the exact birth date of the passenger flying on the AA domestic flight. I've seen passengers actually 12-16 years of age fly AA with the birthdates in the AA PNR having them noted as 72 years of age. So much for AA and the TSA knowing their exact birth dates. They even got PreCheck LLL repeatedly on the multi-city AA domestic journeys despite -- or perhaps because of -- the birthdates being wrong in multiple ways. TSA doesn't generally require 12-14 year old passengers to show ID. My middle school and junior high school-aged family members fly domestically in the US without ever showing ID. The TSA rules for photo identification are stated as applicable for passengers on covered flights when the passengers are 18 years of age or older.

For domestically-flying, carry-on-only children aged 12-14 years, getting around the jacked-up fees is not going to be reliably stopped by an IT solution.

The jacking up of the fees for kids this age seems to be propositioned on the basis of something independent of the ability of such children traveling by themselves. In this day and age of elementary school children having smart phones, growing up with widespread internet access, and knowing to port around their own chargers for their devices, they are in less need of an airline escort to get around than they used to be. And for middle school/junior high school aged children, forget about it; they are generally more capable users of consumer communication technology than their parents or grandparents.