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Chapter 4. iTV Receivers > Application Meta-data Issues

4.4. Application Meta-data Issues

Application meta-data is data about an application. Application meta-data is often distributed across multiple layers and in a variety of formats. Some meta-data appears in the transport, whereas other data appears in application resources, e.g., XML files.

4.4.1. Universally Unique Application ID (UUID)

Common to all standards is the assignment of a Universally Unique ID (UUID) to each and every application [UUID]. These are 128-bit numbers that are guaranteed to be unique. The mechanism used to guarantee their uniqueness is a combination of hardware addresses, time stamps, and random seeds.


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