DescriptionThis research explores the feasibility of using human memory recall as a form of user identification. Traditional authentication methods such as passwords and biometrics have well-known limitations, including susceptibility to theft or duplication. In contrast, human memory is highly individualized and difficult to imitate. To evaluate this hypothesis, a user study was carried out, which included 87 participants. These individuals were instructed to recall a particular group of words in a delayed free recall (DFR) setup. We qualitatively and quantitatively analyzed the patterns and characteristics of their memory recall using machine learning algorithms in Classification and Similarity settings. Our results show that memory recall can be a reliable and effective means of user identification, with an accuracy rate of 78%. Overall, this research demonstrates the promise of using human memory recall for user identification, highlighting its potential as a valuable addition to the authentication landscape.