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- Ioannis Leftheriotis, Michail N. Giannakos
- Computers in Human Behavior
- 2014
Social Media have been gaining in popularity worldwide over the last years at an increasingly growing rate. The introduction of social media in companies enables a new method of communication among… (More)
In this paper, we present an updated set of experimental tasks and measures for large multi-touch (MT) input devices. In addition to a multi-user condition, we have employed an updated set of tasks,… (More)
- Ioannis Leftheriotis, Michail N. Giannakos, Letizia Jaccheri
- Smart Learning Environments
- 2017
Interactive displays (IDs) are increasingly employed in informal learning environments, where they are seen as a medium for enhancing students’ creativity, and engagement. Due to the larger space… (More)
In this paper, we present a system that facilitates the analysis of user activity within a web video. Previous research in user-based techniques has assumed an extra effort from the users, such as… (More)
MT (Multi-touch) screens are platforms that enhance multiuser collaboration. In this work, we underline the need for novel interaction techniques and toolkits that allow multi-user collaboration on… (More)
In this work, we present the design and implementation of a chorded menu for multiple users on a large multi-touch vertical display. Instead of selecting an item in a fixed menu by reaching for it,… (More)
In this paper, we propose a user-based video-indexing method, that automatically generates thumbnails of the most important scenes of an online video stream, by analyzing users’ interactions with a… (More)
- Ioannis Leftheriotis
- CHI Extended Abstracts
- 2013
In this research, we present a novel technique for user authentication. We take advantage of the fact that multi-touch screens have become apparent to almost any modern device so as to present a new… (More)
In this work, we are exploring the architectural design (software, hardware, human factors) of large and scalable multi-touch screens. In contrast to desktop and notebook computers, the size and… (More)