A lens barrel comprises an actuator, and an image blurring correction device provided near the actuator. Integrated computer and computer executable remote permanent magnetic dipole position and orientation detection system monitors remote object movement. In a further embodiment, the spacer is made of small particles disposed between the electrodes. The microcontroller monitors the output of the amplifier chain and stores the signal and compares it with previously stored signals. The activity andor other like information can be considered in light of one or more activity or other useful parameters that define the operation of the resulting content data cache.