LinkedIn is now testing a Frequent Viewer tool that lets Premium users know which connections repeatedly check their profiles.
Krista Mollion, founder of Unignorable Brands, first spotted the feature last month and dubbed it a "stalker alert."
Mollion, who has nearly 79,000 followers, says the tool groups viewers into friends, potential salespeople, and business leads, and reaching out often leads to useful opportunities.
LinkedIn confirmed the test but gave no further details.
The feature only appears for users with Premium and signals that someone has specifically viewed the profile, not just liked a post.
Privacy-savvy users can switch to Private mode to hide their profile from such tracking.