To identify a media item from a database of media items that have common content, a region of interest is defined to include a plurality of frames of a test fingerprint that correspond to different segments of a media item. In some embodiments, a minimally invasive procedure may be used to form a spinal stabilization system in a patient. Repeated packet collisions between the short bursts are avoided by randomly varying the time period between the short bursts. In one implementation, the common sensor input is from a gyroscope. When multiple mechanical reels are used in a gaming machine, the symbol designating position for each reel strip can be the same as any other reel strip or can vary from any of the other reel strips.