Addressability

Definition
Addressability is the capacity for a device to be located. To be addressable, a device must be uniquely identifiable, which means that it must be associated with something &mdash; typically an alphanumeric string, although there are other possibilities &mdash; that is not associated with anything else that exists within that system.

Source

 * Universal Frameworks, "Industrial Internet of Things (I IOT) Glossary" (full-text).