Three Words Finance February 21 news, recently many netizens reported that Douban embedded an imperceptible watermark in the page, if the user has logged in to the account, it may include the user account when taking the screenshot.
As can be seen from the screenshot, the watermark information added by Douban includes the user UID, TID and the complete time with time zone, and the watermark information is generally difficult to detect using white, but it can be seen by turning on night mode. If you use the mouse to select all areas, you can find the watermark through the highlighted background, or you can find the watermark by adjusting the color of the screenshot through the color grading software. It is reported that if the user is in the login state, then the watermark contains the user UID, if there is no login, the watermark contains information such as tid and time.
However, at present, Douban has modified this blind watermark to hide the user ID.