Rather than the existing three tolerances (50m, 250m and 500m) for verifying attendance check-ins by geo-locations, allow more fine grained control. This could be done by either allowing an institution to specify an exact value (e.g. "123m") or by extending the existing tolerances so their is one for every 50m between 500m and 50m.

This will allow institutions with different campus layouts and building density to more accurately verify attendance check-ins.