Physical evidence, archival records, and nonintrusive observations used for design insight
- This method is used to acquire information without direct participant contact.
- Examples of physical trace erosion measures include wear patterns in floors or grass indicating preferred pedestrian traffic.
- Examples of accretion measures include litter, graffiti, temporary signage, product modifications, or finger-prints to indicate patterns of use.
- Archives are considered unobtrusive measures because they may be accessed without direct contact with participants.
- Observation can be an unobtrusive measure when those being observed do not know it and the researcher has had no input in the situation structure.
- Digital footprints ...