Hello. I am George.
I have read your project very carefully and I can meet your requirements.
I have ever designed and developed School Security Enforcement(学校安防强化) in the near past. Then the requirements was similar with what you need. The manager of school has to track for all the children not to kidnap and the parents would need to see how their children are doing well.
Especially as soon as the children arrived at school, parents have to check it automatically through Mobile phone.
To complete your work, it needs to know about Object tracking with various camera system(HIKVISION, DAHENG....), Server-Client Communication System and so on.
Anyhow, we can discuss over chat more detail.
Thanks for your decision.