Attendance you can prove
Students clock in and out from the room. Instructors sign off on who was there. Every hour has evidence behind it.
Only in the room
A geofence around your classroom plus a code that changes every 30 seconds on the screen at the front.
Signed off by name
The instructor counts heads before seeing the list, then signs off on who was present.
Records that hold up
Each clock action keeps its time, location, device and IP. Records can be corrected but never quietly changed.