Cultural probes

The data is recorded in a form of a diary that is kept by the respondents. The information can be then used for development of new service ideas or service improvements.

Additional reading
Gaver, Dunne and Pacenti. “Design: cultural probes.” interactions 6.1 (1999): 21-29.

Gaver et al. “Cultural probes and the value of uncertainty.” interactions 11.5 (2004): 53-56.