Children get on the wrong bus everyday, sometimes they fall asleep and miss their stop. Secretaries spend hours reconciling attendance and ensuring the safety of our children. What if the bus driver didn't leave that stop because that child tapped their ID on the way in. What if the driver didn't leave school until all the right children are on that bus. There's a fire, school administrators and emergency services know how many students are in the school. Bring a Studentrak reader on the next field trip and ensure we all arrive and return.

I'm proposing a cheap IoT board (Arduino <$50 or Nodemcu <$10), SIM900 shield (for mobile) and/or Wi-Fi module)