We’ve written about a number of schools that employ UHF EPC Gen 2 RFID to track students (see Tagged High School IDs Improve Student Flow, Enforce Rules) and other types of passive or active tags (see Northern Arizona University to Use Existing RFID Student Cards for Attendance Tracking and Missouri School District Puts RFID on Buses). None of these applications, however, exactly match the one you are considering.
That said, we have covered a similar application that utilizes AeroScout active tags to do what you are trying to accomplish (see RFID Watches Over School Kids in Japan). I would bet that the integrator wrote the application that sends the text message, and that this is not an out-of-the-box solution. So the answer really is that no company, to my knowledge, sells a solution that does exactly what you are looking for.
If any of our readers are aware of such a solution, please post information below.
—Mark Roberti, Editor, RFID Journal
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