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Mobile devices have been manufactured and enhanced at growing rates in the past decades. While this growth has significantly evolved the capability of these devices, their security has been falling behind. This contrast in development…

Cryptography and Security · Computer Science 2022-04-21 Sara Kokal , Laura Pryor , Rushit Dave

This study asks whether the threat of AI detection changes how people write with AI, and whether other people can tell the difference. In a two-phase controlled experiment, 21 participants wrote opinion pieces on remote work using an AI…

Human-Computer Interaction · Computer Science 2026-04-28 Daniel Tabach

Automated signature verification is a critical biometric technique used in banking, identity authentication, and legal documentation. Despite the notable progress achieved by deep learning methods, most approaches in offline signature…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Matheus Ramos Parracho

This paper presents a human verification scheme in two independent stages to overcome the vulnerabilities of attacks and to enhance security. At the first stage, a hand image-based CAPTCHA (HandCAPTCHA) is tested to avert automated…

Computer Vision and Pattern Recognition · Computer Science 2024-10-15 Asish Bera , Debotosh Bhattacharjee , Hubert P H Shum

Background: The performance of biometric modalities based on things done by the subject, like signature and text-based recognition, may be affected by the subject state. Fatigue is one of the conditions that can significantly affect the…

Computer Vision and Pattern Recognition · Computer Science 2022-02-28 Enric Sesa-Nogueras , Marcos Faundez-Zanuy , Manuel-Vicente Garnacho-Castaño

Digital forensic is now an unavoidable part for securing the digital world from identity theft. Higher order of crimes, dealing with a massive database is really very challenging problem for any intelligent system. Biometric is a better…

Computer Vision and Pattern Recognition · Computer Science 2024-02-20 Asish Bera , Debotosh Bhattacharjee , Mita Nasipuri

The handwriting of an individual may vary substantially with factors such as mood, time, space, writing speed, writing medium and tool, writing topic, etc. It becomes challenging to perform automated writer verification/identification on a…

Computer Vision and Pattern Recognition · Computer Science 2020-01-01 Chandranath Adak , Bidyut B. Chaudhuri , Michael Blumenstein

Biometric authentication by means of handwritten signatures is a challenging pattern recognition task, which aims to infer a writer model from only a handful of genuine signatures. In order to make it more difficult for a forger to attack…

Computer Vision and Pattern Recognition · Computer Science 2018-10-18 Paul Maergner , Vinaychandran Pondenkandath , Michele Alberti , Marcus Liwicki , Kaspar Riesen , Rolf Ingold , Andreas Fischer

A biometric recognition system can operate in two distinct modes: identification or verification. In the first mode, the system recognizes an individual by searching the enrolled templates of all the users for a match. In the second mode,…

Cryptography and Security · Computer Science 2024-02-22 Axel Durbet , Paul-Marie Grollemund , Kevin Thiry-Atighehchi

The security of messaging applications against person-in-the-middle attacks relies on the authenticity of the exchanged keys. For users unable to meet in person, a manual key fingerprint verification is necessary to ascertain key…

Human-Computer Interaction · Computer Science 2021-06-03 Lee Livsey , Helen Petrie , Siamak F. Shahandashti , Aidan Fray

In order to develop infocommunications devices so that the capabilities of the human brain may interact with the capabilities of any artificially cognitive system a deeper knowledge of aging is necessary. Especially if society does not want…

Human-Computer Interaction · Computer Science 2022-03-09 Marcos Faundez-Zanuy , Enric Sesa-Nogueras , Josep Roure-Alcobé , Anna Esposito , Jiri Mekyska , Karmele López-de-Ipiña

Synthetically-generated audios and videos -- so-called deep fakes -- continue to capture the imagination of the computer-graphics and computer-vision communities. At the same time, the democratization of access to technology that can create…

Computer Vision and Pattern Recognition · Computer Science 2021-01-29 Shruti Agarwal , Tarek El-Gaaly , Hany Farid , Ser-Nam Lim

Identity verification based on authenticity assessment of a handwritten signature is an important issue in biometrics. There are many effective methods for signature verification taking into account dynamics of a signing process. Methods…

Computer Vision and Pattern Recognition · Computer Science 2016-10-06 Krzysztof Cpalka , Marcin Zalasinski , Leszek Rutkowski

As text generated by large language models proliferates, it becomes vital to understand how humans engage with such text, and whether or not they are able to detect when the text they are reading did not originate with a human writer. Prior…

Computation and Language · Computer Science 2022-12-27 Liam Dugan , Daphne Ippolito , Arun Kirubarajan , Sherry Shi , Chris Callison-Burch

Background: An advantageous property of behavioural signals ,e.g. handwriting, in contrast to morphological ones, such as iris, fingerprint, hand geometry, etc., is the possibility to ask a user for a very rich amount of different tasks.…

Cryptography and Security · Computer Science 2022-02-28 Marcos Faundez-Zanuy , Jiri Mekyska , Donato Impedovo

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

Cause of a rapid increase in technological development, increasing identity theft, consumer fraud, the threat to personal data is also increasing every day. Methods developed earlier to ensure personal the information from the thefts was…

Computer Vision and Pattern Recognition · Computer Science 2020-04-13 Sher Dadakhanov

Tele-operated robots rely on real-time user behavior mapping for remote tasks, but ensuring secure authentication remains a challenge. Traditional methods, such as passwords and static biometrics, are vulnerable to spoofing and replay…

Robotics · Computer Science 2025-06-18 Rongyu Yu , Kan Chen , Zeyu Deng , Chen Wang , Burak Kizilkaya , Liying Emma Li

Applications using gesture-based human-computer interface require a new user login method with gestures because it does not have a traditional input method to type a password. However, due to various challenges, existing gesture-based…

Computer Vision and Pattern Recognition · Computer Science 2018-08-02 Duo Lu , Dijiang Huang

Background- This paper summarizes the state-of-the-art and applications based on online handwritting signals with special emphasis on e-security and e-health fields. Methods- In particular, we focus on the main achievements and challenges…

Cryptography and Security · Computer Science 2022-02-28 Marcos Faundez-Zanuy , Julian Fierrez , Miguel A. Ferrer , Moises Diaz , Ruben Tolosana , Réjean Plamondon