RFID ticketing systems constitute a particular type of pervasive information systems providing spectators of sports events with a transparent mechanism to validate and renew tickets. This study seeks to investigate the factors that influence user acceptance of RFID ticketing systems. The theoretical background of the study was drawn from the technology acceptance model (TAM) and the innovation diffusion theory (IDT), and enhanced with factors related to privacy and switching cost features. The research model was tested with data gathered through a lab experiment (N=71). The participants perceived the system as useful and easy to use, and expressed the willingness to adopt it should it become commercially available. Moreover, the results of ANOVA tests suggest that the age and education of users influence their perception towards the usefulness of the system and its subsequent use.