• Facebook Friend Mapper Extension App Download
• Facebook Friend Mapper Extension Free Download
• Facebook Friend Mapper Extension For Chrome

We've already seen a nifty trick for viewing a map of everywhere Google knows you've been, but what about Facebook?

Well thanks to a clever Google Chrome extension discovered by The Next Web, you can now explore your own map of every location Facebook knows you and your friends have been — using only the location data that is often attached to your conversations over Facebook Messenger.

The map hack is so accurate that it is even able to show you where you and your friends have been when messaging one another to within a meter.

Created by student developer and future Facebook intern Aran Khanna, the hack is called Marauders Map after the magical map that revealed the location of Hogwarts students in 'Harry Potter.' And don't worry, while a bit creepy, the hack and Google Chrome extension are perfectly legal, with the Chrome extension simply populating a map with locations already tied to your Facebook messages.

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Of course, the Marauders Map reveals only the locations of conversations where both you and your friends had location sharing enabled, but many people forget that the setting is turned on by default in the Facebook Messenger app, so you might have shared more locations than you realized.

How to see your own Marauders Map

With Google Chrome as your web browser, head to the Chrome Web Store and download the free Marauders Map extension.

Once you have installed the Chrome extension and authorized it to pull in data from Facebook, you can head to https://www.facebook.com/messages/ to see a list of your past Messenger conversations. Next, simply make sure your browser window is fully expanded (don't shrink the window down to a smaller size), and you should notice a blue box with a map pop up in the lower left corner of your screen.

You can minimize the map by clicking on the blue toolbar and bring it back up by clicking on the words Marauders Map. This is the map you'll see populated with tiny chat bubbles representing you and your friends as you sift through your past conversations.

To get started, you'll need to click on a conversation within Messenger and scroll upward to the beginning of the messaging thread. This ensures all possible data points are added to the map, and you should notice the map begin to populate as you go. If you don't see anything, chances are either you or your friend in that particular conversation had location sharing turned off.

You can click on other conversations to load more data points, and feel free to zoom in and out to get a closer look. It should look something like this.

Clicking on any of the chat bubbles will bring up a detailed spiderweb of everywhere you or your friends have been throughout your messaging history, with the bubble representing the most recent location.

In a blog post on Medium, Khanna writes that 'by gathering a couple weeks' worth of chat data on the map and looking at the location clusters you can even figure out [my friend's] weekly schedule. With this you can predict exactly which building he would be in at a given time.'

It's no surprise that Khanna now chooses to disable location sharing when using Facebook Messenger, and keep in mind that's always an option.

If you want to make sure you never share your location inside Messenger, simply navigate to the Settings cog inside your iOS and Android Facebook Messenger app and uncheck the box marked 'Location.' You can also go to your iPhone's Settings app, tap Privacy> Location Services> Messenger and select 'Never' to revoke Facebook Messenger's location-sharing privileges.

In the recent past, Facebook has brought more power to the users and now they can control all the information they’ve shared on their Facebook accounts. You can go to your Facebook privacy settings and limit the visibility of posts, pictures and whatnot.

Many of you would have set the privacy of your friends list as private. But this isn’t enough. A week ago, a new Chrome extension came into the limelight and it claims to reveal the hidden friends list to your friends. I tried out this tool myself and the “Only Me” option to keep your friends list hidden from the world doesn’t work anymore.

How does this Facebook Friends Mapper extension for Chrome work?

Facebook Friends Mapper Chrome extension fools the mutual friends feature of the Facebook and collects the hidden friends’ data of your friends and makes them public for you.

Let’s suppose a friend of yours doesn’t share his/her friends list but has few mutual friends with you. THN writes: “If, for example, Facebook CEO Mark Zuckerberg does not share his friends list with the public and neither I am on his friend list. However, I have at least one mutual friend with him. So using Facebook Friends Mapper tool I would be able to see most of his hidden Facebook friends by exploiting the ‘mutual friend’ logical flaw.”

How to use Facebook Friends Mapper extension for Chrome?

Step 1:

To see any friend’s hidden friends list, you need to download and install the Facebook Friend Mapper extension and restart the browser.

Step 2:

Now go to your friend’s profile whom you are wishing to see the hidden friends list. You will be seeing a new (Reveal Friends) option in the friends tab.

Step3:

Facebook Friend Mapper Extension App Download

Click on the Reveal Friends option and you will be able to see all the friends whether they are your mutual friends or not.

Warning: These kinds of extensions are not good for your web browser, I just installed them in order to make the tutorial and write about this flaw. So I won’t recommend you to use this on a permanent basis.

Note: However, to use this Facebook Friends Mapper Chrome extension, you must have one mutual friend with the target. It doesn’t matter if you are Facebook friends with that person or not.

If someone uses this tool, your privacy settings won’t work for that person and your hidden friends list will be exposed. I hope Facebook fixes this logical flaw before this tool goes viral.

You can install and check out the Facebook Friends Mapper Chrome extension for free.

Facebook Friend Mapper Extension Free Download

Facebook Friend Mapper Extension For Chrome

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