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scan barcodes and it will find the cheapest items and deliver them to your door.

Mall of America QR contest on Black Friday. 300 people lined up to scan, 1000 others scanned it over the weekend. They showed a video explaining how to scan the code to raise awareness. 

delayMIrror shows what you did a few seconds ago, so shoppers can better see all angles of the outfit

I like this trend

Located in a high end retail complex in LA. Digital photobooth to put your face on Katy Perry christmas ornament shaped like her new perfume bottle. Over 2000 ornamnet were added to the digital christmas tree and emailed to shoppers.

update on shopkick. To date 1 billion in-app deals and offers have been viewed via the app.The app has seen 10 million product scans, up from 7 million in August 2011 and 3 million in February 2011.

Similar to Google Shopper, but has branding possibilities 

Walmart says it has launched a microsite called classrooms.walmart.com, which compiles thousands of classroom supply lists, with schools in all 50 states participating. The Bentonville, Ark.-based retailer says it is the first major retailer to digitize supply lists, which allow shoppers to buy items either online or at their local store. (Local school supply lists will also be available in Walmart stores, it says.) 

One obstacle in the process: would-be shoppers must install a "Glamour Friends & Fans" app to scan and buy products - both for the wall and the magazine experience.

 Volga Verdi is a California-based fashion brand that offers its customers discounts depending on the number of friends, followers or fans they have on popular social networks.

Twitter users, for example, get a discount of USD 7 if they have between 20 and 200 followers, or USD 15 if they have more. 

Clothing retailer Neiman Marcus launches its new mobile personal shopping application enabling shoppers to select and find various items via their mobile devices. Through the use of location-based technology and QR codes, the iOS application lets users browse through their favorite products and find them through a store locator. Moreover, special events and new arrivals will be sent to the users via push notifications.

receipts that print out recipes based on what you bought

Shoppers view various printed images pertaining to the Mizrahi brand through the viewfinder of the app on their smartphone and hidden content comes to life on the screen.

buy shoes at discount in return for a date