Check out the update below.

A friend of mine posted a status update with something rather interesting. According to the status, you were able to find out the name of your phones sim card by typing in a simple “code” to the comments box of any type of post. All you had to do is type in the following;

@[123:0]

Replace the numbers “123″ with the last three numbers of your telephone number. I tested it out and indeed it work. It changed @[854:0] into Ashley Nathanson. Kind of odd, but what ever. I then started to wonder if it would work with other numbers. It did. It worked with almost any number abover 110. It even worked with 4 digit numbers and so on.

Im not sure if this is a bug, or if Facebook knows about this, but I thought I would share it with you. Check out the video below to see me doing it on one of my photo comment boxes.

Update

Turns out this is not really a bug, but it is basically how Facebook tag people in posts and it is related to your facebook ID. Before Facebook introduced the profile username, you were assigned profile ID numbers, which are still used if you look hard enough in the Facebook code. For example If you take the number 456 and put it into the string as @[456:0] it will give you the name Becky Wald. Now, if you go to https://www.facebook.com/profile.php?id=456 you will see Becky Wald’s profile page. Similarly, if you use the number 700197659 in the string, @[700197659:0], it will produce my name, David Miller. Also as above, if you go to https://www.facebook.com/profile.php?id=700197659 it will take you to my profile.

This concludes the mystery of what this is all about!.