Need a delay between login and again login

[Android Central Question]

I created an application for student to mark their attendance by Scanning qr code from that application, now i want login delay for that application for some security reasons, what i actually need is if a user login into application than he cannot be able to login again with the application for some time limit how to acheive it.
Because if i dont implement this than a student can login in others student account and mark their Attendance too.
Plus i use volley library with php script to login and other crud operations for my application.

 

[mustang7757]

You doing this on a computer?

I'll leave a Link to register so you can communicate here as a guest account you can only post questions but can't reply.
https://forums.androidcentral.com/showthread.php?t=409154

 

[B. Diddy]

Welcome to Android Central! I moved this to the Software Development forum for more specific traffic.