[philwebster]

It turns out the iOS Facebook app has this feature already under the sidebar > Find Friends > QR Code > Scan Code. The URL is in the form https://www.facebook.com/qr?id=###########. Unfortunately when I scanned codes, the app did nothing even though it said it would bring me to a Facebook page, so the feature does not appear to be working properly.

[karlmalone32]

It looks like it only works with other people's QR codes from the "Find Friends > QR Code > Your Code" area and not random codes. Worked for me with those codes though.