Imagine standing at the Eiffel Tower and being able to see messages and videos overlaid through your smartphone from all visitors who have come before you.

A new app called Wallit combines augmented reality, a virtual view of the real world that can be extended with graphics and other content, with a socialexperience.

It allows users to post and view content atvirtual wallsin popular places, tourist attractions such asthe Eiffel Tower, stadiums and stores.

“Think of a virtual wall on the face ofthe Golden Gate Bridgefrom one end to the other where people can leave sentiments, photos, movies and even audio that are persistent at that location, even though the people who generate the content constantly keep changing,” said Veysel Berk, the founder of Wallit.

The goal, he said, is to record a cumulative, human experience at a location that exhibits the character of a place over time.

“We wanted to move the physical experience of a public wall that everyone can see content on and move it into digital and virtual life,” he explained.

To maintain the quality of content posted to the app users cannot create their own wall, which ensures there is only one wall for a place, producing a common experience for visitors. Content must also be generated and posted from the physical place where the virtual wall is located.

More at: http://news.yahoo.com/app-leaving-virtual-mark-physical-places-051821927.html

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QR codes are one of the most often asked about topics, but up to now I’ve pretty much avoided the subject. That’s mainly because it’s been three years since foursquare launched, but there’s still no good way to check in using a QR code that works across all the major platforms.

I recently checked out foursQR on the iPhone and it’s a pretty good solution for iPhone users. No, it’s not the answer for everyone, but it works very well in certain cases.

You can quickly create a PDF QR code sticker on foursQR’s site for any venue and put it wherever you like – provided you have the owner’s permission of course.

What’s it good for? Any place that you check in often and that you control. I’ve put one on the wall next to my desk at the office. I can check in using foursQR in less than 10 seconds thanks to its automatic check-in function at places I’ve added as favorites. It’s a fast and easy process.

More at: http://aboutfoursquare.com/iphone-app-uses-a-qr-code-to-check-you-in-on-foursquare/