| 1. |
- Schmitz, Martin, et al.
(författare)
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Rethinking Smart Objects : The International Workshop on Interacting with Smart Objects in Interactive Spaces
- 2022
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Ingår i: ISS 2022. - New York, NY, USA : Association for Computing Machinery (ACM). ; , s. 64-67
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Konferensbidrag (refereegranskat)abstract
- The increasing proliferation of smart objects in everyday life has changed how we interact with computers. Instead of concentrating computational capabilities and interaction into one device, everyday objects have naturally integrated parts of interactive features. Although this has led to many practical applications, the possibilities for explicit or implicit interaction with such objects are still limited in interaction spaces. We still often rely on smartphones as interactive hubs for controlling smart objects, hence not fulfilling the vision of truly smart objects. The workshop Rethinking Smart Objects invites practitioners and researchers from both academia and industry to discuss novel interaction paradigms and the integration and societal implications of using smart objects in interactive space. This workshop will include an action plan with leading questions, aiming to move the research field forward.
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| 2. |
- Deja, Jordan Aiko, et al.
(författare)
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Intelligent Music Interfaces : When Interactive Assistance and Augmentation Meet Musical Instruments
- 2023
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Ingår i: Proceedings 4th Augmented Humans International Conference, AHs 2023. - New York, NY, USA : Association for Computing Machinery (ACM). ; , s. 379-383
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Konferensbidrag (refereegranskat)abstract
- The interactive augmentation of musical instruments to foster self-expressiveness and learning has a rich history. Over the past decades, the incorporation of interactive technologies into musical instruments emerged into a new research field requiring strong collaboration between different disciplines. The workshop "Intelligent Music Interfaces"covers a wide range of musical research subjects and directions, including (a) current challenges in musical learning, (b) prototyping for improvements, (c) new means of musical expression, and (d) evaluation of the solutions.
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| 3. |
- Elsayed, Hesham, et al.
(författare)
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VRSketchPen : unconstrained haptic assistance for sketching in virtual 3D environments
- 2020
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Ingår i: Proceedings of the 26th ACM Symposium on Virtual Reality Software and Technology. - New York, NY, United States : Association for Computing Machinery (ACM). ; , s. 1-11
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Konferensbidrag (refereegranskat)abstract
- Accurate sketching in virtual 3D environments is challenging due to aspects like limited depth perception or the absence of physical support. To address this issue, we propose VRSketchPen – a pen that uses two haptic modalities to support virtual sketching without constraining user actions: (1) pneumatic force feedback to simulate the contact pressure of the pen against virtual surfaces and (2) vibrotactile feedback to mimic textures while moving the pen over virtual surfaces. To evaluate VRSketchPen, we conducted a lab experiment with 20 participants to compare (1) pneumatic, (2) vibrotactile and (3) a combination of both with (4) snapping and no assistance for flat and curved surfaces in a 3D virtual environment. Our findings show that usage of pneumatic, vibrotactile and their combination significantly improves 2D shape accuracy and leads to diminished depth errors for flat and curved surfaces. Qualitative results indicate that users find the addition of unconstraining haptic feedback to significantly improve convenience, confidence and user experience.
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| 4. |
- Kosch, Thomas, et al.
(författare)
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Intelligent Music Interfaces: When Interactive Assistance and Adaptive Augmentation Meet Musical Instruments
- 2024
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Ingår i: AHs 2024 - Augmented Humans 2024. - : Association for Computing Machinery (ACM). ; , s. 327-330
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Konferensbidrag (refereegranskat)abstract
- The interactive augmentation of musical instruments to foster self-expression and learning has a rich history. Over the past decades, incorporating interactive technologies into musical instruments has emerged as a research field requiring strong collaboration between disciplines. The workshop "Intelligent Music Interfaces"covers a wide range of musical research subjects and directions, including (a) current challenges in musical learning, (b) prototyping for improvements, (c) new means of musical expression, and (d) evaluation of the solutions.
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| 5. |
- Kulyk, Oksana, et al.
(författare)
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Coercion-resistant Proxy Voting
- 2016
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Ingår i: ICT Systems Security and Privacy Protection. - Cham : Springer. - 9783319336299 ; , s. 3-16
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Konferensbidrag (refereegranskat)abstract
- In general, most elections follow the principle of equality, or as it came to be known, the principle of "one man - one vote". However, this principle might pose difficulties for voters, who are not well informed regarding the particular matter that is voted on. In order to address this issue, a new form of voting has been proposed, namely proxy voting. In proxy voting, each voter has the possibility to delegate her voting right to another voter, so called proxy, that she considers a trusted expert on the matter. In this paper we propose an end-to-end verifiable Internet voting scheme, which to the best of our knowledge is the first scheme to address voter coercion in the proxy voting setting.
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| 6. |
- Kulyk, Oksana, et al.
(författare)
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Introducing Proxy Voting to Helios
- 2016
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Ingår i: Proceedings of 2016 11th International Conference on Availability, Reliability and Security, (Ares 2016). - : IEEE. - 9781509009909 ; , s. 98-106
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Konferensbidrag (refereegranskat)abstract
- Proxy voting is a form of voting, where the voters can either vote on an issue directly, or delegate their voting right to a proxy. This proxy might for instance be a trusted expert on the particular issue. In this work, we extend the widely studied end-to-end verifiable Helios Internet voting system towards the proxy voting approach. Therefore, we introduce a new type of credentials, so-called delegation credentials. The main purpose of these credentials is to ensure that the proxy has been authorised by an eligible voter to cast a delegated vote. If voters, after delegating, change their mind and want to vote directly, cancelling a delegation is possible throughout the entire voting phase. We show that the proposed extension preserves the security requirements of the original Helios system for the votes that are cast directly, as well as security requirements tailored toward proxy voting.
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| 7. |
- Marky, Karola, et al.
(författare)
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Intelligent Music Interfaces: When Interactive Assistance and Augmentation Meet Musical Instruments
- 2022
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Ingår i: Conference on Human Factors in Computing Systems - Proceedings. - New York, NY, USA : ACM.
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Konferensbidrag (refereegranskat)abstract
- The interactive augmentation of musical instruments to foster self-expressiveness and learning has a rich history. Over the past decades, the incorporation of interactive technologies into musical instruments emerged into a new research field requiring strong collaboration between different disciplines. The workshop "Intelligent Music Interfaces"consequently covers a wide range of musical research subjects and directions, including (a) current challenges in musical learning, (b) prototyping for improvements, (c) new means of musical expression, and (d) evaluation of the solutions.
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| 8. |
- Marky, Karola, et al.
(författare)
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Investigating Page Turning Methods for Sheet Music during Piano Play
- 2021
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Ingår i: Adjunct Publication of the 23rd International Conference on Mobile Human-Computer Interaction. - New York, NY, USA : Association for Computing Machinery (ACM). ; , s. 1-6
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Konferensbidrag (refereegranskat)abstract
- Musical pieces composed for the piano are registered on paper sheets. Since the space for sheets on the piano is limited, pianists have to turn pages while playing the piano to get access to the registered without having to stop playing. In this work, we present two methods to support page turning during piano play: 1) turning by touch and 2) turning by pedal in combination with two types of note layouts in (1) DIN A4 and (2) an adaptive display size. We compared these page turning methods to the baseline of using paper pages with 10 participants in a controlled lab experiment. Our results show that the pedal-adaptive turning method leads to the lowest interruption time while playing and pedal-based methods have a high usability and low cognitive load.
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| 9. |
- Marky, Karola, et al.
(författare)
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Let’s frets! : assisting guitar students during practice via capacitive sensing
- 2021
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Ingår i: Proceedings of the 2021 CHI Conference on Human Factors in Computing Systems. - New York, NY, USA : Association for Computing Machinery (ACM). ; , s. 1-12
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Konferensbidrag (refereegranskat)abstract
- Learning a musical instrument requires regular exercise. However, students are often on their own during their practice sessions due to the limited time with their teachers, which increases the likelihood of mislearning playing techniques. To address this issue, we present Let's Frets - a modular guitar learning system that provides visual indicators and capturing of finger positions on a 3D-printed capacitive guitar fretboard. We based the design of Let's Frets on requirements collected through in-depth interviews with professional guitarists and teachers. In a user study (N=24), we evaluated the feedback modules of Let's Frets against fretboard charts. Our results show that visual indicators require the least time to realize new finger positions while a combination of visual indicators and position capturing yielded the highest playing accuracy. We conclude how Let's Frets enables independent practice sessions that can be translated to other musical instruments.
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| 10. |
- Marky, Karola, et al.
(författare)
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”Nah, it’s just annoying!” A Deep Dive into User Perceptions of Two-Factor Authentication
- 2022
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Ingår i: ACM Transactions on Computer-Human Interaction. - : Association for Computing Machinery (ACM). - 1073-0516 .- 1557-7325. ; 29:5, s. 1-32
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Tidskriftsartikel (refereegranskat)abstract
- Two-factor authentication (2FA) is a recommended or imposed authentication mechanism for valuable online assets. However, 2FA mechanisms usually exhibit user experience issues that create user friction and even lead to poor acceptance, hampering the wider spread of 2FA. In this article, we investigate user perceptions of 2FA through in-depth interviews with 42 participants, revealing key requirements that are not well met today despite recently emerged 2FA solutions. First, we investigate past experiences with authentication mechanisms emphasizing problems and aspects that hamper good user experience. Second, we investigate the different authentication factors more closely. Our results reveal particularly interesting preferences regarding the authentication factor "ownership"in terms of properties, physical realizations, and interaction. These findings suggest a path toward 2FA mechanisms with considerably better user experience, promising to improve the acceptance and hence, the proliferation of 2FA for the benefit of security in the digital world.
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