Hi @Nicola Consani ,
Welcome to the community!
You can't track the user who has viewed the card!
You can track how many users viewed the card by using https://trello.com/power-ups/5d8a1a4d3508db61b655bf9e/view-tracker-for-trello
you can see who made a change to a card by visiting the Activity pannel.
Hello Community! My name is Brittany Joiner and I am a Trello enthusiast and Atlassian Community Leader. In this video, I'll share my favorite Trello templates. Templates mentioned in ...
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