Today in Apple history: Nike+iPod Sport Kit puts fitness tracking in pockets
Tune Belt Sensor Case Shoe Pouch for NIKE+ IPOD SPORT KIT NANO Iphone 4 4s 5 Touch Sensor Black|shoes for women size 11 and up|pouch filmpouch set - AliExpress
Create Your Own Nike+ (Nike Plus) Sensor Hole in Your Running Shoes : 4 Steps - Instructables
How To Attach/Mount Nike+ iPod Sensor To Any Running Shoe - YouTube
Nike-iPod venture in tune with runners' need for data – The Denver Post