Which of the following is an example of self-service technology?

Self-service technology empowers users to obtain information or support without the need for direct help from service personnel. Faxback systems exemplify this concept as they allow customers to send a request for information via fax, after which the system automatically returns the requested documents or data via fax as well. This process is automated and requires no human intervention, thereby enabling users to resolve their inquiries independently.

While telephone customer support, in-person assistance, and email communication all involve some level of interaction with support personnel, they do not fit the definition of self-service technology. Telephone support typically requires speaking to a representative, in-person assistance necessitates direct interaction with staff, and email communication often results in back-and-forth exchanges with support agents. These methods rely on human involvement, contrasting with the autonomous nature of self-service technologies like faxback systems.