An embodiment of a system for detecting and measuring biosignals preferably includes a biosignal sensor subsystem comprising a set of sensors configured to detect biosignals from the user, a sensor interface for pre-processing signals from the set of sensors and an electronics subsystem coupled to the biosignal sensor subsystem, the electronics subsystem configured to power the system and facilitate processing of biosignals detected by the system. An embodiment of a method for detecting and measuring biosignals of a user preferably includes inserting a payload into tissue of a user, navigating the payload through tissue of the user, and securing the payload to the user.