Method for detecting mishandling and misuse of food products

A method of authenticating a product for human or animal use, the method comprising forming at least one XRF identifiable mark on the product prior to commercialization, reading and storing for reference at least one XRF identifiable characteristic of said mark, and reading said mark at any point in time following commercialization of the product to identify the mark and determine whether the at least one XRF identifiable characteristic has undergo a change, wherein the product is selected from food products, therapeutics and cosmetics.

A method for marking a product selected from food products, therapeutics and cosmetics with an XRF pattern, the method comprising forming on at least a region of the product a pattern of at least one FDA-grade material identifiable by XRF, the pattern having a first characteristic being responsive to an external stimulus by transitioning from the first characteristic to a second characteristic, said transition being identifiable by XRF and indicative of exposure to said external stimulus.

An ink formulation comprising at least one FDA-grade material and at least one carrier, the at least one FDA-grade material being identifiable by XRF.

A method for marking an egg for human use with an XRF identifiable mark, the method comprising forming on at least a region of the egg a pattern of at least one FDA-grade material identifiable by XRF, the pattern being optionally at least partially invisible to the naked human eye and having a predefined identifiable characteristic.

A method of authenticating an egg for human use, the method comprising forming at least one XRF identifiable mark on the egg prior to commercialization, reading and storing for reference at least one XRF identifiable characteristic of said mark, and reading said mark at any point in time following commercialization of the egg to identify the mark and determine whether the at least one XRF identifiable characteristic has undergo a change.

A method for marking an egg with an XRF pattern, the method comprising forming on at least a region of the egg a pattern of at least one FDA-grade material identifiable by XRF, the pattern having a first characteristic being responsive to an external stimulus by transitioning from the first characteristic to a second characteristic, said transition being identifiable by XRF and indicative of exposure to said external stimulus.

A method of authenticating a meat product for human use, the method comprising forming at least one XRF identifiable mark on the product prior to commercialization, reading and storing for reference at least one XRF identifiable characteristic of said mark, and reading said mark at any point in time following commercialization of the product to identify the mark and determine whether the at least one XRF identifiable characteristic has undergo a change.