Facebook doesn’t let you track who is viewing your profile. Third-party apps aren’t allowed to do it either. If they claim to offer the ability they are banned from Facebook. And yet, we continue to see scams spread far and wide across Facebook claiming to offer it. See this example, for instance, which tags a photograph of a woman sunbathing in her bikini with the names of Facebook users, to see it appear in their newsfeed and will no doubt be curious to find out more.”]
Source: https://grahamcluley.com/bikini-clad-women-photo-tags-aid-facebook-scammers/