A new Chrome extension called Marauder's Map makes it easy to extract and visualize location data on your friends on Facebook Messenger. Download the extension (for free) here. Go to Facebook. Chrome Extension Facebook Friends Mapper Facebook Friends Mapper allows you to reveal the friend-lists of those who have at least one mutual friend with you. Simply browse to your target's profile.
Want to creep out your friends with a map of their recent whereabouts? Well, if they have ever used Facebook Messenger and have left the location tracking within their phone on, you’re in luck. A new Chrome extension called Marauder’s Map (aptly named after the magical map from Harry Potter) lets anyone pull the location data tied to individual messages sent via a phone with location turned on and visualize it in a map. Here's what it looks like: Here's what Marauder's Map looks like in action. Photo: Aran Khanna The mapping is eerily accurate. By digging through the data, creator Aran Khanna (a computer science major at Harvard and future intern at Facebook) found that latitude and longitude coordinates had five decimal places. That means locations were accurate down to the meter, he wrote in a. As an active user of Messenger, he was also able to determine the daily schedule of his friends. Here’s how to use it: • Open Google Chrome as your web browser. Expand it to take up your screen. • Download the extension (for free). • Go to on your desktop. You’ll see pop-up in the left corner that reads “Marauder’s Map.” • Click on a conversation, and you’ll see the profile pictures of participants in that thread appear in circles on the map. As you scroll up in the conversation, more data will be added. If you’re fearful of this feature, you don’t have to completely abandon using Facebook Messenger. You are able to turn off your location sharing for Messenger. For iOS, go to Settings > Privacy > Location Services > Messenger > Select Never. For Android, tap the menu icon within the Messenger app, go to Settings > Location Services. Why expose his future employer in the stalking abilities of the app? It may not be the company but rather the casual absent-mindedness of a consumer. ![]() “The main problem is that every time you open your phone and send a single message, it’s so easy to forget about your location data being attached to it. Furthermore, it seems so harmless to attach a location with a single message, but the problem is over time the information from these messages adds up,” Khanna wrote on Medium. PSA: An iPhone also has the ability to track and map your every move. Go to Settings > Privacy > Location Services > scroll to the bottom and select System Services > Frequent Locations. By clicking on areas within the History section, you can visualize when and where you have been. You can turn that off as well, if you so choose. Unlike Marauder’s Map, only you have access to this data and the visualization. Whether you're a celebrity or someone with something to hide, Facebook allows you to keep your 'friends list' private so you can protect the identities of your Facebook friends. But it only kind of protects them. There's a simple Facebook hack that lets you unravel entire networks of people as you navigate around a user's 'private' friends list. However, I must warn you, the easy way to do this will take a long time to complete, and the fastest way to do this requires a bit of programming knowledge. Facebook Friends Mapper Extension Free DownloadSounds a little counterintuitive, I know. The Concept Behind the Friends List Hack According to Facebook, every user gets to decide what is and isn't visible to their friends. If you decide to make your friends list private, great. However, that doesn't mean that you are private on your friends' friends list. This workaround takes advantage of that fact. You basically unravel a private friends list by viewing that individual's mutual friendships with someone who doesn't have their list set to private. The most beautiful thing about this is that you don't even need to be friends with the person you're hacking. The Long Way: Manually Getting Around the Private Friends List As you can imagine, a good number of high profile figures and celebrities have set their friends list to private. For our purposes, we'll use an easily accessible celebrity who we know has a personal Facebook account (and not just a 'Page'). Mark Zuckerberg. Step 1: Use Facebook's 'Graph Search' to Find a Probable Friend Zuckerberg's friends list is set to private, and for good reason. However, to run this hack, we're going to need to find at least one friend of his who has a public friends list so that we can look at their mutual friends. ![]() Facebook Friends Mapper Extension Free Download For PcIf you use the app, would you be comfortable knowing your location can be pinpointed to less than a meter? Sure Facebook with your friends, but did you know that if you use Messenger to group chat with someone who is not a friend, then that person can now find out not just what town you were chatting from, but longitude and latitude coordinates of where you did your chatting? Those coordinates are reportedly accurate to less than three feet from where you sent the message, according to Aran Khanna, a computer science and mathematics student at Harvard, who created a creepy new Chrome extension called to help you. Before we dig into Marauders Map, you need to know there is no reason to freak out and panic as the pinpointing app only works if you left location services for Messenger enabled. Hopefully you back when Facebook had to for Messenger permissions to access a phone’s camera and microphone. If you aren’t sure, then location is probably on as Facebook tends to snub privacy-by-design options; location sharing is on by default. [ Free download: ] Khanna, who named Marauders Map after Harry Potter’s magical map capable of tracking people, said, “I decided to write this extension, because we are constantly being told how we are losing privacy with the increasing digitization of our lives, however the consequences never seem tangible.
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