Anonymity is important in retrospectives because it helps establish trust and the feeling of psychological safety. While you can view who is currently present in your retrospectives using the left-side navigation panel, the content of retrospectives is completely anonymous.
During the private brainstorming phase, you'll only be able to see the contents of your own notes. This is to reduce groupthink and maintain anonymity. Once you move on to the Group phase everyone will then be able to see all of the cards without knowing who created which cards.
During the Think phase, Retrium uses obfuscation of text for privacy reasons, not security reasons.
Each note in Retrium is a different color, which is randomly generated from a selection of color options. Note colors are not associated with card topic, the team member who wrote the card, nor the card's column.
Anonymity makes Retrium a valuable option for distributed or co-located retrospectives because you are not able to identify who wrote each card based on the color or size of the note, the person's handwriting, or any other distinguishing feature. The best ideas can then be considered without being influenced by who wrote them.