[Android Central Question]

I'm using Samsung S7. On android 7, when screen was locked, I could not turn wifi and data on/off, I had to unlock it first. After 8.0 update, that feature is gone.

It was useful for me: I work at a ministry and for the security reasons we leave our phones at the entrance. Sad is it is, security guards try to read our messages from notification bar. On android 7, I could just turn wifi and data off and give the phone to them, and they could not turn it on because of screen lock protection. Now it's unsecure. How do I get back the feature presented on 7.0?