Facebook has not yet developed any feature that allows the user to know who has been viewing his or her profile. However, many applications claim to be able to show the identities of those who have visited a particular profile.
Even though there are several applications that claim to be able to give identities of profile viewers, Facebook does not endorse these applications and has warned against their use several times. These applications are known to contain viruses and malware, which is why they are discouraged. As of 2014, these fake apps constitute the most common type of Facebook scam. The only way to know if a person has viewed a profile is if they comment or engage in a visible activity on the timeline.
While there is no absolute way to track profile visitors, there are certain clues you can look out for on your Facebook profile timeline that may point to the individuals who view your profile more than others. On the left-hand side of all Facebook member timelines, there is a section that continuously rotates photos of nine different friends.
According to Kite Media, the friends that show up in this area are the individuals with whom you interact with most on the site or vice versa through messages, profile views, comments and likes, based on Facebook's algorithms. If there are certain friends who continually show up in this section with whom you don't have any interaction with, it is possible that they are viewing your profile on a regular basis.