Origin-destination obfuscation

Origin-destination obfuscation is an anonymization method that works on batch probes (historical data).

It removes the points which are in the area of origin of the trace and/or its destination.

Configure this method using the following parameters:

• areaUris: List of area URIs which point to the files with the area definitions. There needs to be defined at least one area URI.
• ignoreRepeatingRegion: When enabled, points within the origin or destination area are retained, even when they aren't at the start or the end of the trace. Default value: false.
• timeWindowSeconds: Value used to round timestamps. When set to 0, no rounding applies. When set to 3600, rounding to the hour is applied. Default value: 0.

When using origin-destination obfuscation, you must provide areas that determine what "origin" and "destination" are.

These areas aren't considered as trace points. To ensure good anonymization, you must find a balance between how granular these areas are, the desired level of anonymization, and the amount of retained data.

Examples of areas which could serve for this feature are:

• Postal code areas
• Built-up areas
• Map tiles
• Euclidean tilings
• Voronoi diagrams