Eye retina scanning is a popular biometric method for identification and authentication that has revolutionized the security industry. However, there are many synonyms for this term that can be used interchangeably. Some of the synonyms include iris recognition, ocular scanning, and eye vein authentication. All of these are different techniques that use various parts of the eye to obtain unique biometric data. Iris recognition focuses on the colored part of the eye, while ocular scanning examines different attributes of the eye's surface. Eye vein authentication, on the other hand, analyzes the patterns in the blood vessels of the eye. Regardless of the method used, eye retina scanning is an advanced and secure way to verify identities and protect sensitive information.