If you were at BlackBerry World™ or BlackBerry® 10 Jam last week, you might have seen the foursquare “Check-in Stations” we set up. Did you know they were NFC-enabled?

Four days prior to the two conferences, foursquare released an updated version of their BlackBerry® smartphone app. The biggest addition? Near Field Communications! You can now check in at a venue with nothing more than a wave of your NFC-capable BlackBerry smartphone. (Of course, the venue has to have NFC tags for you to tap your BlackBerry smartphone against. It’s not actually magic – it just seems that way.)

Peter Nofelt, Software Engineering Manager – BlackBerry at foursquare (you might recognize his name from BlackBerry DevCon 2010) shot a quick demonstration video of the onsite NFC experience with fellow BlackBerry platform developer at foursquare, Kyle Fowler.

We learned a lot about #TeamBlackBerry from your foursquare check-ins. At BlackBerry World, the Solutions Showcase had the most check-ins and was the most popular event, while the most popular session was a Hands-On Lab, “BlackBerry® Mobile Fusion Studio and BlackBerry Device Service,” whereattendees learned how to install BlackBerry Mobile Fusion Studio and BlackBerry Mobile Fusion for BlackBerry devices.

At BlackBerry 10 Jam, attendees checked in at the Jam Space most often. No surprise there – the Jam Space was where developers could “Ask The Experts”, port their apps to the BlackBerry platform (in minutes!) at the App Express station, or simply hang out with us at the Social Media Desk. The most popular conference session on foursquare was “Get Ready for Cascades™ Development,” where attendees got a preview of Cascades and the powerful tools behind it.

Of course, it wouldn’t be a BlackBerry conference if we didn’t have the swag to back it up. At the end of each conference, the five attendees with the most check-ins won exclusive foursquare “Mayor Badge” t-shirts. Check out one of the mayors of BlackBerry 10 Jam, Chad Tetreault — he’s the guy that brought you LensBoost, among many other apps.

Below are more of the photos you shared with us when you checked in on foursquare, including another picture of those awesome t-shirts! (I know, I want one too. That’s the problem with “exclusive.”)

BlackBerry 10 Jam

BlackBerry World

If you haven’t done so already, head to BlackBerry App World™ to download the foursquare app.

Were you at the event? Did you check in? What badges did you earn? Share your foursquare stories in the comments below!