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Modern smartphones support FIDO2 passwordless authentication using either external security keys or internal biometric authentication, but it is unclear whether users appreciate and accept these new forms of web authentication for their own…

Cryptography and Security · Computer Science 2023-04-21 Leon Würsching , Florentin Putz , Steffen Haesler , Matthias Hollick

Smartphones and tablets have become ubiquitous in our daily lives. Smartphones, in particular, have become more than personal assistants. These devices have provided new avenues for consumers to play, work, and socialize whenever and…

Cryptography and Security · Computer Science 2019-11-12 Abdulaziz Alzubaidi , Jugal Kalita

Behavioral biometrics based on smartphone motion sensors are growing in popularity for authentication purposes. In this study, AirSignatureDB is presented: a new publicly accessible dataset of in-air signatures collected from 108…

Human-Computer Interaction · Computer Science 2025-08-13 Marta Robledo-Moreno , Ruben Vera-Rodriguez , Ruben Tolosana , Javier Ortega-Garcia , Andres Huergo , Julian Fierrez

The demand for biometric systems has been increasing with the growth of the smartphone market. Biometric devices allow the user to authenticate easily while securing its private data without the need to remember any access code. Amongst…

Computer Vision and Pattern Recognition · Computer Science 2017-12-20 Mathilde Bourjot , Regis Perrier , Jean François Mainguet

Matching contactless fingerprints or finger photos to contact-based fingerprint impressions has received increased attention in the wake of COVID-19 due to the superior hygiene of the contactless acquisition and the widespread availability…

Computer Vision and Pattern Recognition · Computer Science 2021-12-13 Steven A. Grosz , Joshua J. Engelsma , Eryun Liu , Anil K. Jain

Passenger flow allows the study of users' behavior through the public network and assists in designing new facilities and services. This flow is observed through interactions between passengers and infrastructure. For this task, Bluetooth…

Human-Computer Interaction · Computer Science 2024-02-20 Valentino Servizi. , Dan R. Persson , Francisco C. Pereira , Hannah Villadsen , Per Bækgaard , Inon Peled , Otto A. Nielsen

The overall objective of the main project is to propose and develop a system of facial authentication in unlocking phones or applications in phones using facial recognition. The system will include four separate architectures: face…

Computer Vision and Pattern Recognition · Computer Science 2024-03-21 Anh-Kiet Duong , Hoang-Lan Nguyen , Toan-Thinh Truong

In recent years, the widespread adoption of wearable devices has highlighted the growing importance of behavior analysis using IMU. While applications span diverse fields such as healthcare and robotics, recent studies have increasingly…

Computer Vision and Pattern Recognition · Computer Science 2025-06-05 Koki Matsuishi , Kosuke Ukita , Tsuyoshi Okita

We introduce a novel multimodal mobile database called HuMIdb (Human Mobile Interaction database) that comprises 14 mobile sensors acquired from 600 users. The heterogeneous flow of data generated during the interaction with the smartphones…

Human-Computer Interaction · Computer Science 2020-06-01 Alejandro Acien , Aythami Morales , Julian Fierrez , Ruben Vera-Rodriguez , Ivan Bartolome

In the digitized world, smartphones and their apps play an important role. To name just a few examples, some apps offer possibilities for entertainment, others for online banking, and others offer support for two-factor authentication.…

Cryptography and Security · Computer Science 2023-07-18 Alexander Hefter , Christoph Sendner , Alexandra Dmitrienko

Validating smartphone sensor-based tests to study gait and balance against reference measurement systems in a laboratory setting poses several technical challenges related to data quality and data processing. One challenge is to guarantee…

Using physical interactive devices like mouse and keyboards hinders naturalistic human-machine interaction and increases the probability of surface contact during a pandemic. Existing gesture-recognition systems do not possess user…

Human-Computer Interaction · Computer Science 2022-09-08 Ankit Jha , Ishita , Pratham G. Shenwai , Ayush Batra , Siddharth Kotian , Piyush Modi

Vision-aided wireless communication is attracting increasing interest and finding new use cases in various wireless communication applications. These vision-aided communication frameworks leverage visual data captured, for example, by…

Signal Processing · Electrical Eng. & Systems 2023-08-08 Gouranga Charan , Ahmed Alkhateeb

The emergence of mobile applications to execute sensitive operations has brought a myriad of security threats to both enterprises and users. In order to benefit from the large potential in smartphones there is a need to manage the risks…

Cryptography and Security · Computer Science 2016-06-10 Ahmad-Atamli Reineh , Giuseppe Petracca , Janne Uusilehto , Andrew Martin

We present a dataset of 1000 video sequences of human portraits recorded in real and uncontrolled conditions by using a handheld smartphone accompanied by an external high-quality depth camera. The collected dataset contains 200 people…

Computer Vision and Pattern Recognition · Computer Science 2022-04-22 Anastasiia Kornilova , Marsel Faizullin , Konstantin Pakulev , Andrey Sadkov , Denis Kukushkin , Azat Akhmetyanov , Timur Akhtyamov , Hekmat Taherinejad , Gonzalo Ferrer

Pedestrian Indoor localization based on modalities available in modern smartphones have been widely studied in literature and many of the specific challenges have been addressed. However, very few approaches consider the whole problem and…

Signal Processing · Electrical Eng. & Systems 2024-05-01 Christophe Villien , Anne Frassati , Bruno Flament

This work investigates how context should be taken into account when performing continuous authentication of a smartphone user based on touchscreen and accelerometer readings extracted from swipe gestures. The study is conducted on the…

Human-Computer Interaction · Computer Science 2019-05-30 Pekka Siirtola , Jukka Komulainen , Vili Kellokumpu

The emergent large language/multimodal models facilitate the evolution of mobile agents, especially in mobile UI task automation. However, existing evaluation approaches, which rely on human validation or established datasets to compare…

Human-Computer Interaction · Computer Science 2024-08-05 Li Zhang , Shihe Wang , Xianqing Jia , Zhihan Zheng , Yunhe Yan , Longxi Gao , Yuanchun Li , Mengwei Xu

We propose Secure Pick Up (SPU), a convenient, lightweight, in-device, non-intrusive and automatic-learning system for smartphone user authentication. Operating in the background, our system implicitly observes users' phone pick-up…

Cryptography and Security · Computer Science 2017-08-31 Wei-Han Lee , Xiaochen Liu , Yilin Shen , Hongxia Jin , Ruby B. Lee

There is growing concern about how personal data are used when users grant applications direct access to the sensors of their mobile devices. In fact, high resolution temporal data generated by motion sensors reflect directly the activities…

Machine Learning · Computer Science 2018-06-21 Mohammad Malekzadeh , Richard G. Clegg , Andrea Cavallaro , Hamed Haddadi