Recently at SXSW Microsoft Tag partnered with Foursquare. We released over Ten Thousand custom Tags to the crowds.
When these special tags were scanned by a mobile they directed the user to check- in at SXSW on Foursquare.

This is a great way for anyone to direct mobile users to a locatoin check-in.
Anyone can use this feature with ease and implement it in their own Tags!

Go ahead and scan the above tag!