How to Use a QR Code to Add Friends on WhatsApp
by David Murphy from Lifehacker on (#53TB7)
QR codes probably aren't something you use on a daily basis, but they are incredibly useful when you need them. If you're a big WhatsApp fan, you can now use QR codes to import contacts into the app-or share your contact information with others. It couldn't be any easier to set up and use-with one small caveat.