The invention provides a drug delivery system for delivering a drug to either the small intestine or the colon comprising a HPMC capsule containing the drug and wherein the HPMC capsule is provided with a suitable coating such that the drug is released from the capsule either in the small intestine or the colon. In a first preferred embodiment, the method comprises magnetizing the longitudinal biasing layers of the read head in a transverse direction, so that the resulting field at the position of the transverse biasing layer places it in a minimum of potential energy which stabilizes its direction. In addition, changes in the positions of the nodes are tracked using accelerometers. Methods for receiving and distributing feedback for customized designs and sets of terms are included. The matrix is clad in a metal such as copper or aluminum, and may be coated with nickel and gold to facilitate bonding of the window frame to the flange and the leads with goldgermanium solder.