Abstract: A method for accounting for individual persons of a plurality of persons based upon random times that occur as a function of a first specified time interval, and a random interval monitoring system that operates in accordance with the method to report information regarding the presence of both desired and undesired conditions affecting a person. The method includes a first step of transmitting information signals based upon random times from individual ones of a plurality of tags each to be worn by respective persons to at least one of at least one master transceiver and at least one transceiver. The information signals transmitted from each tag correspond to whether a tag is being worn and to certain activities or a lack thereof of sensors in electrical communication with the tag including pressure and motion sensing equivocated to actually wearing the tag.

Abstract: A line tying device especially useful for tying a fish line to a fish hook or to another fish line. The line is helically wound a number of times around a mandrel body; the free end of the line is then passed through a groove in the mandrel body into the space circumscribed by the helical windings. A depression in the tip end area of the mandrel body keeps the helical winding in place; after the windings have been formed a pulling force may be exerted on the free end of the line to draw the wound area (knot) off of the mandrel body.