A student developer from Cambridge created a Chrome extension that works much like the Harry Potter Marauders map, to find out where friends are writing to from us using Facebook Messenger . The extension allows you to see each movement of the friends with whom you are chatting through the Facebook messages app or even from the PC so you can locate them and know where they are exactly.
This trick is not a hack that exploits particular Facebook bugs, but a simple extraction of data allowed by Facebook Messenger where you can decide whether or not to send our location.
If this option is activated, then the other person can know where we are and using the map locate us exactly.
UPDATE: It is possible to officially Follow the movements of friends on Messenger to know where they are at all times.
After installing the Marauders Map extension on Google Chrome (it no longer works), you can then open the Messages page //www.facebook.com/messages and notice the appearance of the world map at the bottom left.
At this point, just click on one of the conversations in the list on the left to see the position from which the person you were chatting with wrote us .
If you select a group conversation, you will see the location of each person on the map.
The extension works well even if it is still a little defective.
Sometimes it may be necessary to wait before seeing people's faces on the map or reload the page.
Also do not have to switch from one conversation to another quickly, otherwise you will not see any position.
Messenger web interface and recovers data from messages sent via Facebook Messenger with the sharing location enabled.
The extension does not track the position, but reads the data shared with Facebook Messenger, if the position sharing option is active.
The extension is therefore unable to know the position of those who do not use Messenger or who have disabled the option.
Considering that the vast majority of your friends know nothing about sharing the location, it will be very easy to find out where they wrote from scrolling through the various past conversations and you can find out where they are now only by starting a chat from Facebook Messenger .
Basically to know where a person is
If you want to prevent sharing the location in Facebook Messenger, disable the blue location icon when writing a message or go to the phone settings and prohibit access to the location or geolocation of Facebook Messenger.
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