A method for associating medical devices is provided. The method can include providing a plurality of medical devices and each of the medical devices can include an accelerometer configured to measure spatial accelerations of the medical device. Each of at least two of the medical devices can measure with its accelerometer an acceleration pattern with respect to time. The method can include comparing for correspondence, according to defined correspondence criteria, the measured acceleration patterns, and associating all of the medical devices that measured acceleration patterns that satisfy the defined correspondence criteria. The method can also include modifying a parameter of each member of a set of devices that are associated.
