SACHI @ #CHI2018 in Montreal

CHI 2018



Members of SACHI will be at the upcoming CHI 2018 conference. If you are looking to meet members of SACHI to discuss collaborations or research visits you can find us here. Likewise, if you are a company attending CHI and you wish to discuss working with us please get in touch. You can find us helping and involved throughout CHI 2018 including 6 full papers (1 best paper), 1 demonstration, 1 late-breaking work and other activities.


SACHI Seminar: Matjaž Kljun – Large scale studies of habit changing interface design

Event details

  • When: 12th April 2018 14:00 - 15:00
  • Where: Cole 1.33b

SACHI Seminar – Large scale studies of habit changing interface design

Speaker: Matjaž Kljun


Various technologies can be used in persuading people to change their habits, behaviours or attitudes. Such technologies are defined as persuasive and they are used in a variety of fields such as marketing, public health and education.

We are daily exposed to persuasion through different visualizations and triggers on all our devices. For example, a social networking application tries to persuade us in opening the app with a push notification and once the app is opened other hooks are placed so we spend more time in it. However, such applications are usually installed by us and we are inclined in using them. But could we persuade highly busy professionals in completing a training course or just about everybody to read terms of service? We will discuss these issues through large-scale studies that have been in done in the wild.

Speaker biography: Matjaž Kljun is an assistant professor at the Faculty of Mathematics, Natural Sciences and Information Technologies at University of Primorska and is co-directing the HICUP lab (Humans Interacting with Computers at University of Primorska) and a research associate at the Faculty of Information studies, Slovenia. He received his Ph.D. degree in computer science from Lancaster University, UK. His research interests span across various fields related to Human-Computer Interaction, Personal Information Management and the use of technologies in teaching and learning.

SACHI Seminar: Klen Čopič Pucihar – The Missing Interface: Micro Gestures on Objects for Augmented Reality Interaction

Event details

  • When: 12th April 2018 14:00 - 15:00
  • Where: Cole 1.33b

SACHI Seminar – The Missing Interface: Micro Gestures on Objects for Augmented Reality Interaction

Speaker: Klen Čopič Pucihar


Augmented reality technology can introduce digital elements to arbitrary objects. However, these objects were never designed to incorporate the digital component, hence do not provide the necessary interface. To overcome this limitation, AR Interaction systems add sensors to objects, use additional handheld hardware or perform hand and body tracking. These methods are not optimal for direct interaction with physical objects  because they:

  • require modification of existing objects,
  • require the the user to hold the controller in their hand,
  • are based on synthesis of captured RGB or RGB-D data streams imposing the following limitations: (i) gestures need to be  performed within the view of the camera; (ii) the gestures include reasonable large hand or finger movements (e.g. pinching the fingers, blooming gesture of opening the palm; (iii) the hand performing gesture is not occluded (e.g. cannot detect gestures if performed whilst grasping an object).

In this talk Klen will look at alternative methods which try to overcome such limitations and make inconspicuous, precise and flexible object oriented interaction possible for both augmented and mediated reality applications.

Speaker Biography

Klen Čopič Pucihar is assistant professor at the Faculty of Mathematics, Natural Sciences and Information Technologies at University of Primorska. Klen’s research vision is to look for new ways in which one could augmented, modify and mediate rich sources of visual, auditory and tactile stimuli that fabricate our everyday life experiences. The goal is to augment human abilities with new ways of using computational resources. This is important because the interface presents itself as the bottleneck between us humans and the benefit ever increasing computational resources could have on our everyday life. This makes the interfaces the core challenge for the future and the essence of Klen’s research which is currently mainly concentrated on augmented reality, mobile computing and human-computer interaction focusing on different perceptual issues that arise whilst interacting with various computer systems which lead to innovative user interface designs. Klen’s work was published as high ranked scientific publications and won him best poster award at ISMAR 2014.

Mensch-und-Computer 2019 Keynote by Professor Aaron Quigley

Professor Aaron Quigley will be a keynote speaker at the Mensch-und-Computer conference 2019 in Hamburg Germany in September of 2019. This series of symposia takes place each year in different German-speaking countries. This is one of the largest HCI conferences in Europe each year with over 700 delegates from industry and academia. Usability Professionals and Scientists come together in a multi-track program with long papers, short contributions, demos, tutorials and workshops. Submissions are possible in German and English.

Hamburg Speicherstadt

VISSOFT 2018 Keynote by Professor Aaron Quigley

Aaron will be a keynote speaker at the IEEE VISSOFT 2018 conference later this year. “The sixth IEEE Working Conference on Software Visualization (VISSOFT 2018) builds upon the success of the previous four editions of VISSOFT, which in turn followed after six editions of the IEEE International Workshop on Visualizing Software for Understanding and Analysis (VISSOFT) and five editions of the ACM Symposium on Software Visualization (SOFTVIS). Software visualization is a broad research area encompassing concepts, methods, tools, and techniques that assist in a range of software engineering and software development activities. Covered aspects include the development and evaluation of approaches for visually analyzing software and software systems, including their structure, execution behavior, and evolution.”


St Andrews – University of Primorska co-tutelle in Computer Science

The University of St Andrews and Primorska are soon to agree to award a joint degree with the title of Doctor of Philosophy (on condition that the joint PhD study programme in Computer Science will gain accreditation of the Slovenian Quality Assurance Agency for Higher Education). This represents the culmination of many months of effort from Drs Matjaž Kljun, Klen Čopič Pucihar and Professor Aaron Quigley. Aaron and Matjaž first met at the UMAP conference in 2011 in Spain as mentor and mentee in the PhD doctoral program. Since then, Matjaž and Klen who undertook their PhDs in the University of Lancaster have returned to Slovenia to establish and exciting program of HCI research and development in the HICUP lab. In 2017 a program of international support (Slovenian/English) allowed them to invite Aaron to Slovenia for three weeks and this has resulted in a number of join grant submissions and the establishment of this co-tutelle program. We look forward to many years collaborating and we look forward to this new PhD student starting later this year.


SACHI Seminar – Florian Echtler (Bauhaus-Universität Weimar): Instant Interaction

Event details

  • When: 16th November 2017 15:00 - 16:00
  • Where: Cole 1.33b


Instant Interaction


Although Mark Weiser’s original vision of “ubiquitous computing” has all but arrived due to the wide availability of smartphones, tablets and interactive screens, the envisioned ease of use is still mostly lacking. This is particularly apparent when we consider interaction and collaboration between multiple persons and their personal mobile devices. These issues can be partly mitigated by relying on cloud services for data exchange, but this approach opens up multiple other issues regarding data safety and privacy. In this talk, I will present the concept of “instant interaction”, which aims to enable ad-hoc interaction between multiple persons, their individual mobile devices, and fixed infrastructure, without requiring any prior exchange of account data or PINs. The only prerequisite for immediate interaction is physical proximity. Examples from my current research will illustrate this  concept.

SACHI Seminar: Alix Goguey (University of Saskatchewan) – Augmenting touch expressivity to improve the touch modality

Event details

  • When: 1st November 2017 13:15 - 14:15
  • Where: Honey 103 - GFB



Augmenting touch expressivity to improve the touch modality


During the last decades, touch surfaces have become more and more ubiquitous. Whether on tablets, on smartphones or on laptops, touch surfaces are used by a majority of us on a daily basis. However, the limited expressivity – the different channels used to convey information to the system – of the touch modality restricts drastically the amount of features that can be controlled via touch only. For instance, a typical smartphone touchscreen only provides the absolute position of a contact on the screen, thus applications usually offer only one way to carry out tasks (which can augment user frustration or cap performances) or restrict possibilities (e.g. Photoshop on desktop offers more than 600 commands but only about 40 on smartphones and tablets). In this talk, I will present an overview of my on-going research and discuss different ways to tackle this problem, augment touch expressivity and user efficiency: from tools that helps better designing touch interfaces to the use of new input dimensions in original interaction techniques.

iVoLVER system wins Best Demo Jury Award at ACM ISS 2017

The iVoLVER system (, created by Gonzalo Méndez and Miguel Nacenta from the SACHI group at the School of Computer Science, University of St Andrews, received on Thursday 19 the ACM ISS Best Demo Jury Award during the conference, which took place at Brighton, UK.

iVoLVER is a web-based visual programming environment that enables anyone to transform visualizations that the find in-the-wild (e.g., in a poster or a newspaper) into new visualizations that are more useful for them.

An example iVoLVER interface.

The ACM Interactive Surfaces and Spaces conference takes place yearly in different locations. Next year it will take place in Tokyo, Japan. The conference is a premier venue for work that studies how people interact in smart spaces and surfaces and how to design and engineering solutions for novel interfaces.