Abstract: A method and system is provided for verifying of the authenticity of a consumer product, the method including: providing an overt code on a consumer product, the overt code being readable prior to sale of the consumer product; providing a covert code on the consumer product, the covert code being revealed post sale of the consumer product; receiving a transmission of the covert code from a purchaser of the consumer product; verifying the covert code by reference to a database; if the covert code verifies the authenticity of the consumer product, transmitting an authentication signal to the purchaser; and cancelling the covert code and the overt code once the covert code has been used to verify the authenticity of the consumer product.