Positive, accurate animal identification

Positive, accurate identification of animals and their products would be very helpful in livestock commerce, prevention of theft and fraud and in tracing animals and products to origin. Food safety, animal health, and prevention of epidemics, would be enhanced by combining identification with location. Identification may be by electronic chips, iris or retinal scans, antibody or DNA analysis. A cross listing of one or more means in a central repository would facilitate tracing origin of animals and build confidence in transactions of all kinds.