Methods of delivery of encapsulated perfluorocarbon taggants

摘要

A system and method for tagging, tracking, locating and identifying people and vehicles transporting people using Perfluorocarbon tracers. An on-going problem faced by military as well as law enforcement personnel is that of friendly fire incidents. To prevent possible friendly-fire incidents, troops would separate the two layers of the uniform patch, thereby releasing a controlled release of the Perfluorocarbon vapors. Other “friendly” troops, equipped with sensors tuned to the specific perfluorocarbon characteristics would thus be able to literally view a plume around the tagged person or object. The system may conversely be used to tag enemies. Formulations of mixed perfluorocarbons may be used to provide coding of emissions.

主权项

1. A method for remotely identifying an object, comprising the steps of:
(a) providing a tag which has in an inactivated state a minimal rate of PFT release; (b) activating the tag to commence release at least one PFT by physically interrupting a substantial diffusion barrier; and (c) providing a reservoir having a controlled rate of release of PFT within the tag, wherein the tag is configured to release PFT over an extended duration and to selectively control at least one stable change in a rate of PFT release independent of an amount of PFT remaining in the reservoir, to provide at least two different stable release rates after said activating, before the reservoir of PFT is exhausted.