[grace-baker Hexnode 28 January 2020 grace-baker Moderator]

Hey, Thanks for posting.

You can use the geofencing feature such that you can create a virtual fence around the desired area and the access to the camera can be cut off when the device moves out of this area.
To create a fence, navigate to Admin->Geofencing and click on ‘Create Fence’. Select the region by entering the location in the text box and draw a fence over the region. Click Save.
A dynamic group should be created that will contain all the devices upon which the restriction should be effective.
Now, please navigate to Android–>Restrictions and disable the option ‘camera’. Navigate to General Settings->Geofencing and select the created fence by clicking on ‘+Add fence’. Associate the policy to the group and click Save.

Kindly use the link for detailed explanation on the same.

Cheers!
Grace Baker
Hexnode MDM