Abstract: Implantable medical systems enter an exposure mode of operation, either manually via a down linked programming instruction or by automatic detection by the implantable system of exposure to a magnetic disturbance. A controller then determines the appropriate exposure mode by considering various pieces of information including the device type including whether the device has defibrillation capability, pre-exposure mode of therapy including which chambers have been paced, and pre-exposure cardiac activity that is either intrinsic or paced rates. Additional considerations may include determining whether a sensed rate during the exposure mode is physiologic or artificially produced by the magnetic disturbance. When the sensed rate is physiologic, then the controller uses the sensed rate to trigger pacing and otherwise uses asynchronous pacing at a fixed rate.

Abstract: Registered users including businesses attach a one-time-use identity verifier to as many financial and other transactions as they choose to protect themselves from identity thieves. They may also attach a security message to any identity verifier to ensure that a thief cannot steal a registered user's check from a mailbox and use the unused identity verifier. By using one list for all of a person's transactions, applications for new credit by identity thieves are also prevented. All of this is made possible by allowing the identity verifiers to be approved nonsequentially.