In the meantime, people could probably print up signs with a QR code and instructions telling people to scan the code, 'like' the store, and watch the sign.

A like button on the wifi home page would work well.

Facebook should include a QR code scanner in their app to do this. I rarely scan QR codes because I would rather type in a short URL than find some QR scanning app. (I realize Google's app can do this, but you end up in an in-app web browser where you are likely not signed into Facebook.) If I could get to a business' official page in a couple of taps in the Facebook app, my chances of interacting with the page would definitely increase.

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.

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.

Yes we will, we are working on including some NFC tags in the package but as this is still not totally sure for now we didn't publicly announce anything on that. QR Codes might also do the job but we are not totally sure that people actually use it... (Damn Apple & Android, this SHOULD be native in their camera...)

The Facebook page should also be mentioned on the receipt