There may be some of my friends Blackberry users who do not know how to menginvite contact / friend BBM (Blackberry Messenger) using PIN Barcode, without having to give / mention his PIN number. (PIN stands for personal identification number that uses a decimal hex format, which is owned by any Blackberry device).
Here's how to add a contact to the BlackBerry Messenger PIN Barcode
On the Blackberry to 1:
Run Blackberry Messenger and go to My Profile
Select the Show / Display My Barcode
Barcode Pin will then appear on the screen
On the Blackberry to 2:
Run Blackberry Messenger and select Invite Contact
Select Invite by scanning a PIN barcode
Camera 2 scanner on blackberry to be active, we just point cameranya on display barcode from Blackberry to 1 (see picture). If it's focused and it will automatically read the scanner stops and new contacts added soon.