| abstract |
An ingestible event marker system is provided that includes an ingestible event marker (i.e., IEM) and a personal signal receiver. Embodiments of the IEM include an identifier, which may or may not be present in a physiologically acceptable carrier. The identifier is characterized in that it is activated upon contact with a target internal physiological region of the body, such as the intestinal internal target site. The personal signal receiver is configured to receive a signal from the IEM in conjunction with, for example, a physiological location, such as within the body or the body. In use, the IEM broadcasts the signal received by the personal signal receiver.n n n n An ingestible event marker, a signal receiver, a physiological target site |