activity
20202022
most citedSeeing Red: PPG Biometrics Using Smartphone Cameras

55 citations · 101 across the 6 of their papers we have counts for

collaborators

6 papers

cs.CR2022

I'm Hearing (Different) Voices: Anonymous Voices to Protect User Privacy

Henry Turner, Giulio Lovisotto, Simon Eberz +1

In this paper, we present AltVoice -- a system designed to help user's protect their privacy when using remotely accessed voice services. The system allows a user to conceal their…

cs.CR2022★ 3 cited

FETA: Fair Evaluation of Touch-based Authentication

Martin Georgiev, Simon Eberz, Henry Turner +2

In this paper, we investigate common pitfalls affecting the evaluation of authentication systems based on touch dynamics. We consider different factors that lead to misrepresented…

cs.HC2021

Daily Turking: Designing Longitudinal Daily-task Studies on Mechanical Turk

Henry Turner, Simon Eberz, Ivan Martinovic

In this paper, we present our system design for conducting longitudinal daily-task studies with the same workers throughout on Amazon Mechanical Turk. We implement this system to c…

cs.SD2020★ 15 cited

Speaker Anonymization with Distribution-Preserving X-Vector Generation for the VoicePrivacy Challenge 2020

Henry Turner, Giulio Lovisotto, Ivan Martinovic

In this paper, we present a Distribution-Preserving Voice Anonymization technique, as our submission to the VoicePrivacy Challenge 2020. We observe that the challenge baseline syst…

cs.CV2020★ 28 cited

SLAP: Improving Physical Adversarial Examples with Short-Lived Adversarial Perturbations

Giulio Lovisotto, Henry Turner, Ivo Sluganovic +2

Research into adversarial examples (AE) has developed rapidly, yet static adversarial patches are still the main technique for conducting attacks in the real world, despite being o…

cs.CV2020★ 55 cited

Seeing Red: PPG Biometrics Using Smartphone Cameras

Giulio Lovisotto, Henry Turner, Simon Eberz +1

In this paper, we propose a system that enables photoplethysmogram (PPG)-based authentication by using a smartphone camera. PPG signals are obtained by recording a video from the c…