For mostly commercial or copyright-reasons companies or institutions often sell or offer the opportunity to consult data without making available the source data as such. In 4.3.2 Indexed search versus direct search we already saw the example of CD-ROM vendors who sell their encrypted data together with text retrieval software that is set up so that it supports certain types of queries, hence giving only limited access to the data.
Another example is that of Web-sites that offer access to their local data through some query language. Since the actual data remain hidden, the level of accessibility of the data depends on what the query language supports. This situation is common in both private and in academic circles. It is also used for giving access to linguistic corpora.
Abundantia Verborum was not designed for limiting access to the data and has no modules for encryption or decryption. By consequence in most situations, e.g. on a CD-ROM, it can only serve as interface to freely available data. The Web-site example, however, is an exception. The current program would require only minor modifications to use it to feed data to a server-side CGI-script or Java-script.