Moving out from the control room: ethnography in system design
CSCW '94 Proceedings of the 1994 ACM conference on Computer supported cooperative work
A review of user-interface design guidelines for public information kiosk systems
International Journal of Human-Computer Studies
Rapid ethnography: time deepening strategies for HCI field research
DIS '00 Proceedings of the 3rd conference on Designing interactive systems: processes, practices, methods, and techniques
A survey of usability evaluation in virtual environments: classification and comparison of methods
Presence: Teleoperators and Virtual Environments - Virtual environments: Virtual environments and mobile robots: Control, simulation, and robot pilot training
Current practice in measuring usability: Challenges to usability studies and research
International Journal of Human-Computer Studies
An empirical investigation of mobile ticketing service adoption in public transportation
Personal and Ubiquitous Computing
Investigating Usability Metrics for the Design and Development of Applications for the Elderly
ICCHP '08 Proceedings of the 11th international conference on Computers Helping People with Special Needs
Irreversibility and forceback in public interfaces
Proceedings of the 5th Nordic conference on Human-computer interaction: building bridges
RECON: capturing mobile and ubiquitous interaction in real contexts
Proceedings of the 11th International Conference on Human-Computer Interaction with Mobile Devices and Services
Design ideas for IT in public spaces
Personal and Ubiquitous Computing
Toward accessible self-service kiosks through intelligent user interfaces
Personal and Ubiquitous Computing
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Self-service systems are very common in the public space and usability plays a crucial role for user acceptance. We describe the evaluation of a self-service ticketing machine installed in trams in the city of Graz. Two in-situ methods (behavior observation, contextual interview) and an online survey were used. We discuss advantages of the different methods experienced in the present study according to effort and output. Unsurprisingly online survey was advantageous in terms of time effort. Concerning output, behavior observation identified the most issues with specific interface objects of all methods. Furthermore we were able to identify usage information about the user group of elderlies. Online survey provided a higher number of general issues with the machine and recommendations for change than the two in-situ methods. Further results are discussed and limitations of the study are described in the paper.