Index: openacs-4/packages/proctoring-support/www/resources/proctoring.js
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/proctoring-support/www/resources/proctoring.js,v
diff -u -r1.1.2.22 -r1.1.2.23
--- openacs-4/packages/proctoring-support/www/resources/proctoring.js	10 Jul 2023 14:12:25 -0000	1.1.2.22
+++ openacs-4/packages/proctoring-support/www/resources/proctoring.js	29 Nov 2023 09:00:08 -0000	1.1.2.23
@@ -758,9 +758,16 @@
                 throw 'canvas is monochrome';
             }
 
+            //
             // Check that we are not sending the same picture over and
             // over.
-            if (prevPicture &&
+            //
+            // We can perform this check reliably only when the camera
+            // is recorded, because the desktop may be still for
+            // longer than the average picture interval.
+            //
+            if (streamName === 'camera' &&
+                prevPicture &&
                 this.areCanvasEquals(canvas, prevPicture)) {
                 throw 'you are sending the same identical picture twice.';
             }