DisplayNote Classroom for Android. DisplayNote Support November 26, 2018 17:31 Updated Follow DisplayNote Classroom for Android: https://downloads.displaynote.com/classroom/android/DisplayNote-Classroom-v2.3.0.apk Related articles Joining a DisplayNote Classroom session. Creating a DisplayNote Classroom presenter account. My 10-digit session ID cannot be changed. Why? What is the difference between 6-digit and 10-digit session ID? I have a 10-digit session ID on my home screen. Why can I not get a 6-digit session ID? Comments 0 comments Please sign in to leave a comment.