We use this software in our lab in a production environment. We have N810 in our coffee room that uses the web database over WLAN and it's damn stable. The software is also a nice way to reuse to old N810 tablets which serve no other purpose anymore...
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I am one of the course assistants using the scheduler. Despite the admin interface still needs more work, the software is quite robust and does it's job. I like the shibboleth integration which enables us to reuse the existing student accounts of our university. Most importantly, the google calendar integration makes my life easier.