Please note that Listening Mission uses an automatic monitoring system to prevent abusive behavior and improve data quality.

After completing the tutorial, you will see the following page:

The monitoring system applies to only certain sentences, and these will not be included in your participation history. However, you can still earn points by providing correct answers.
 

If you are flagged by the monitoring system, you will be restricted from playing Litto's Listening Mission for the next 24 hours.