What are the disadvantages of using OPAC?

One disadvantage of using an Online Public Access Catalog (OPAC) is that it can sometimes be difficult to navigate, particularly for users who are not tech-savvy, leading to frustration and inefficiencies in locating materials. Additionally, OPAC systems may not always be updated in real time, resulting in discrepancies between the catalog and actual item availability. Moreover, reliance on OPAC can limit access to resources for individuals without internet access or those who prefer traditional search methods. Lastly, the search algorithms may not always yield relevant results, especially for complex queries.