An information appliance is
||any customer-controlled device through which a user accesses services (in particular, infrastructure services). . . . It includes client appliances as purchased by individuals, as well as server appliances. Client appliances are very diverse and must be cost-effective, while server appliances need to be scalable. Information appliance refers, therefore, to such devices as television receivers, computers, telephones, facsimile machines, wireless personal digital assistants, and medical telemetry units. Sometimes the information appliance will require particular hardware or software, called service interface components, to enable service from an information appliance access point. A specified collection of activities of an information appliance or set of appliances is called an application.