1. A method for verifying a gender of an individual and notifying an error based on the verification, the method comprising: receiving gender identification from the individual, wherein the gender identification information comprises biometric based gender information, demographic information of the individual, and an expression of the individual; assigning, by a processor, a gender to the individual by analyzing a modality of the gender identification information, wherein the modality of the gender identification information is analyzed by employing biometric matching and anthroponomastic analysis; assigning a confidence fuzzy score to the analyzed modality, wherein the confidence fuzzy score indicates correctness of the gender assigned to the individual; verifying, by the processor, the correctness of the gender assigned to-the individual by checking the expression of the individual by presenting a greeting in a language identifiable by the individual and comparing the confidence fuzzy score with a threshold qualifying score, wherein the expression of the individual is checked using the modality for capturing images or gestures in response to the greeting; and notifying, by the processor, an error based on the verification for modifying the assigned gender.