What is a characteristic of the "Clearing" technique in media sanitization?

The "Clearing" technique in media sanitization is characterized by the fact that information may be partially retrievable. This technique typically involves using software to overwrite the existing data on a storage medium with new, random data, but it may not be thorough enough to ensure that all of the original data is irretrievably destroyed. As a result, certain sophisticated recovery techniques can potentially reconstruct some of the original information that was intended to be sanitized. This is particularly relevant when compared to other methods like "Purging" or "Destroying," which aim to provide a higher level of data security by making recovery significantly more difficult or impossible. Understanding this characteristic is essential when evaluating the appropriate method of media sanitization for various security needs.