SociTrack: Infrastructure-Free Interaction Tracking through Mobile Sensor Networks
- Conference Paper
Rights / licenseCreative Commons Attribution 4.0 International
Social scientists, psychologists, and epidemiologists use empirical human interaction data to research human behaviour, social bonding, and disease spread. Historically, systems measuring interactions have been forced to choose between deployability and measurement fidelity—they operate only in instrumented spaces, under line-of-sight conditions, or provide coarse-grained proximity data. We introduce SociTrack, a platform for autonomous social interaction tracking via wireless distance measurements. Deployments require no supporting infrastructure and provide sub-second, decimeter-accurate ranging information over multiple days. The key insight that enables both deployability and fidelity in one system is to decouple node mobility and network management from range measurement, which results in a novel dual-radio architecture. SociTrack leverages an energy-efficient and scalable ranging protocol that is accurate to 14.8 cm (99th percentile) in complex indoor environments and allows our prototype to operate for 12 days on a 2000mAh battery. Finally, to validate its deployability and efficacy, SociTrack is used by early childhood development researchers to capture caregiver-infant interactions. Show more
Book titleMobiCom '20: Proceedings of the 26th Annual International Conference on Mobile Computing and Networking
Pages / Article No.
PublisherAssociation for Computing Machinery
SubjectInfrastructure-free; Dual-radio architecture; Social interactions
Organisational unit03429 - Thiele, Lothar / Thiele, Lothar
NotesConference lecture held on September 21, 2020. Due to the Corona virus (COVID-19) the conference was conducted virtually.
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