Abstract
The subject of analysis is methods and means of unique identification of objects in geospatial datasets, created, registered and used in geographic information systems for various purposes and territorial coverage. Systems for unique identification of geospatial objects are classified according to basic technologies and the presence of semantic content in the composition of unique identifiers, in particular, these systems are based on the use of: 1) universal unique identifiers such as UUID; 2) direct geocoding methods using object coordinates; 3) indirect geocoding methods using geographic names and addresses. The analysis of the advantages and limitations of each of the three groups of systems for the unique identification of geospatial objects is carried out. The results of a computational experiment confirmed the possibility of reliable unique identification of buildings based on the use of an 11-digit open code location code (OLC, Google plus code). The global uniqueness of OLC-based identifiers for geospatial objects of any type requires additional research, but its uniqueness within objects of the same type is practically achievable due to the variable length of the code and the possibility of its extension with additional attributes.
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