UUID

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UUID is an abbreviation for Universally Unique Identifier. It is a 128-bit (16 byte) value which is generated in such a way as to make collisions very unlikely. They are often represented as a string of 32 hex characters with four dashes interspersed. See Wikipedia on UUIDs for more information.

In LSL they are stored in the key variable type (which is a specialized form of a string).

The UUID and Secondlife

In Secondlife every object and every avatar has an UUID and they can be split up into object and avatar UUID's.

Object UUIDs

• Prims
• Objects
• Scripts
• Textures (including sculpty textures)
• Sounds
• Notecards

• The UUID of an object may change when rezzed or after a sim restart or crash
• Access to the UUID of objects is only available to the creator of the object, anyone with full permissions on the object, and Secondlife employees.

Avatar UUIDs

• Avatars

• The UUID of an avatar is publicly available both through scripting and through numerous third party databases