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Beyond LED Status Lights - Design Requirements of Privacy Notices for Body-worn Cameras


Privacy notices aim to make users aware of personal data gathered and processed by a system. Body-worn cameras currently lack suitable design strategies for privacy notices that announce themselves and their actions to secondary and incidental users, such as bystanders, when they are being used in public. Hypothesizing that the commonly used status LED is not optimal for this use case, due to being not sufficiently understandable, noticeable, secure and trustworthy, we explore design requirements of privacy notices for body-worn cameras.

This paper makes two contributions: First, we present eight physical artifacts that have been created during expert design sessions following the lotus blossom methos (see figure above, and supplementary material A). These low-fidelity artifacts (supplementary material B) embed design strategies addressing the problems noticeability, understandability, security, and trustworthiness, and suggest alternatives to LED status lights. They may serve as inspiration or critical designs to spark innovative thinking about privacy notices. Second, we discuss the used design strategies and derive design recommendations for privacy notices and privacy mediating procedures for body-worn cameras.

Supplementary Material


Prototype A
Prototype B
Prototype C
Prototype D
Prototype E
Prototype F
Prototype G
Prototype H


Supplementary Material A: Lotus Blossom Method
Supplementary Material B: Low-Fidelity Artifacts