SoniControl - A Mobile Ultrasonic Firewall

The exchange of data between mobile devices in the near-ultrasonic frequency band is a new promising technology for near field communication (NFC) but also raises a number of privacy concerns. We present the first ultrasonic firewall that reliably detects ultrasonic communication and provides the user with effective means to prevent hidden data exchange. This demonstration showcases a new media-based communication technology ("data over audio") together with its related privacy concerns. It enables users to (i) interactively test out and experience ultrasonic information exchange and (ii) shows how to protect oneself against unwanted tracking.Comment: To appear in proceedings of 2018 ACM Multimedia Conference October 22--26, 2018, Seoul, Republic of Kore

Location-based monitoring in production environments: does transparency help to increase the acceptance of monitoring?

ABSTRACTIn the context of smart manufacturing, the technical development of monitoring systems has made it possible to track employees with the same systems that are used to track assets. This study contributes to our understanding of the acceptance of location-based monitoring of employees and investigates how the perceived privacy risk regarding monitoring can be tackled by examining the role of transparency and the perceived value of monitoring. We designed an experimental setting in which students assembled a 3D printer and manipulated transparency with two conditions: a detailed explanation of monitoring during the task vs. monitoring without any explanation. The results show that the higher the privacy concerns and perceived risks were, the lower was the acceptance for monitoring. However, the negative effect of perceived risk diminishes when both, transparency and the value of monitoring are high, but becomes even stronger when only transparency is high and perceived value is low