Jannis Strecker‑Bischoff standing next to his research poster at CHI 2026. He wears a blue denim jacket over a white t‑shirt and a lanyard marked "ACM Student Member, Full Conference". The poster, titled "Creating Personalized Realities That Connect People's Perceptions of Reality", is structured around four research questions (RQ1 to RQ4) covering modelling of ubiquitous personalization systems, data transparency, affordance navigation, and shared perceptions of reality.

👉 If you want to read more about my research, have a look at my website: academia.jrstrecker.de/personalized...

#PersonalizedReality #HCI #AI #Personalization
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Beach view in Barcelona at sunset. The sun sits low on the right behind a row of palm trees. In the middle distance, the Port Olímpic skyline is visible, including a tall dark tower and the Hotel Arts area. Small waves break on the sand where a few people walk along the shore. Large rocks frame the lower right corner, and two yellow buoys float in the water.

From the workshop on "Social Augmentation through XR Technologies", I came away with a much better sense of how other people are approaching Social XR in all its facets. It was very enriching to discuss our paper on a Personalized Society with other researchers in XR and beyond!
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Jannis Strecker‑Bischoff, wearing a blue denim jacket, discussing his poster with two attendees at CHI 2026. One listener in the foreground wears a burgundy hijab, the other has long brown hair. The poster "Creating Personalized Realities That Connect People's Perceptions of Reality" is partially visible behind them.

We talked about everything from things close to my own research to topics pretty far from it.

It was great to see what other PhD students are working on as part of the Student Mentoring Program, and the feedback from the mentors gave me a few new angles to think about for my own work!
2/4

Opening ceremony of CHI 2026 in a darkened auditorium. A large screen displays the message "Welcome to CHI 2026!" with the subtitle "Creating Tomorrow Together" in English, Catalan ("Creant el demà junts") and Spanish ("Creando el mañana juntos"). Below the text, a mosaic style illustration of the Barcelona skyline including the Sagrada Família and the Torre Glòries. A speaker stands on stage at the podium, the audience visible in silhouette in the foreground.

➡️ Just got back from five days at #CHI2026 in Barcelona, and I am still sorting through notes and a long list of papers I want to read properly!

It was nice to see so many familiar faces again, people I usually only run into at conferences like CHI, and to meet new ones along the way.
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A figure titled 'Connecting Personalized Realities: Challenges and Opportunities in a Personalized Society' by Jannis Strecker-Bischoff, presented at the ACM CHI 2026 Student Mentoring Program Dissertation Research Roundtable, affiliated with the University of St. Gallen Institute of Computer Science. The slide features the RUPS model (published at DIS 2025), a diagram showing how Ubiquitous Personalization (UP) systems work, with interconnected components: UP Recipients (users, bystanders, objects), UP Data Sources (personal user data, content data, situational data), UP Creation (information collection and personalization algorithm), UP Sharing (information collection and sharing algorithm), and UP Delivery (information collection and delivery medium). These components produce a Personalized Reality. Four research questions are listed: RQ1 asks how UP systems can be modelled for responsible design and analysis; RQ2 asks how to give people transparency and agency over their personal data in UP systems; RQ3 asks how Personalized Reality can help humans navigate affordance-rich realities transparently; RQ4 asks what methods can counter isolated perceptions of reality in multi-user scenarios.

🥽 🌍 How do we design ubiquitous personalization systems that connect people's realities instead of isolating them?

Today, I'll discuss this and other questions my PhD tackles at the Student Mentoring Program at #CHI2026!

📄 academia.jrstrecker.de/publication/...

#XR #AR #AI #Personalization #HCI

🌐 How does the adaptive Web shape society?
With #personalization and #AI increasingly influencing how we learn, communicate, and collaborate, it is time to critically reflect on the broader societal implications of adaptive systems.
1/🧵

🔹 AI-fueled Personalization (e.g., LLM-based systems)
🔹 #Privacy, transparency & user control
🔹 Group modeling & collaborative adaptation
🔹 #AR/#VR/#XR and hybrid environments
🔹 Societal risks and long-term effects of #personalization
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My co-organizers Laura Stojko, Eelco Herder, Julia Seitz, Thomas Neumayr, Enes Yigitbas, Mirjam Augstein, and me are looking forward to inspiring contributions and discussions!

We invite contributions on topics including:
🔹 Personalization & recommendation
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The workshop will be held at the ACM Web Science Conference 2026 ( #WebSci2026 ):
📍 Braunschweig, Germany
🗓 May 26, 2026

📅 Submission deadline: March 17, 2026 (AoE)
📄Full papers, late-breaking work, and demos welcome (ACM two-column format)
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We invite submissions on this topic for the ABIS 2026 workshop, which this year has the theme ‘The Impact of the Adaptive Web on Society’.

👉 Submit via EasyChair: easychair.org/cfp/abis2026
🔗 More details: fg-abis.gi.de/veranstaltun...
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🌐 How does the adaptive Web shape society?
With #personalization and #AI increasingly influencing how we learn, communicate, and collaborate, it is time to critically reflect on the broader societal implications of adaptive systems.
1/🧵

An image of a mountain in the background and "Call For Papers", "Submission October 10th, 2025 (AoE)", and the AlpCHI Logo in the foreground.

📢 The submission deadline for Short Papers is approaching soon (October 10, 2025, AoE)!

Researchers, designers, artists, and practitioners worldwide are warmly invited to contribute!

👉 Submit here: easychair.org/my/conferenc...
📄 Call for papers: alpchi.org/call-for-pap...

#AlpCHI2026 #HCI

An image with green mountains in the background. On the top right is a white "AlpCHI 2026" logo. In the bottom there is text overlayed that says "The submission portal is open!".

The AlpCHI submission portal is now open: easychair.org/my/conferenc... 🚀

We have two current calls for contributions:
- Papers: alpchi.org/call-for-pap...
- Revisiting HCI Research: alpchi.org/call-for-rev...

We look forward to receiving your submissions! 😀

An image with snow-capped mountains in the background. On the top right is a white "AlpCHI 2026" logo. In the bottom there is text overlayed that says "Join us at AlpCHI 2026!" and the website "www.alpchi.org".

We are pleased to invite paper submissions to the first ever AlpCHI – our new international HCI summit in the alps!

⛰️Inspired by the beautiful mountainous region, we look forward to exciting contributions about HCI in action, at the summit, in the wild, and exploring the limits.

Thanks to my co-authors Luka Bekavac, Kenan Bektas, and Simon Mayer!

📑 To know more, read the full paper here: doi.org/10.48550/arX...
Or have a chat with me at #CHI2025 next week in #Yokohama! 🗾

#Worldviews #PersonalizedReality #Personalization #MR
#AR #Reality

...actively guide us to learn new things, or help us to achieve goals by deliberately guiding our "perceptual filter bubbles". We envision that this provides people with transparency and agency over their PR and might be a way to widen one's conceptual worldview as well!

...for the #PurposefulXR workshop at #CHI2025, we envision the opposite: personalized XR as a tool for creating individually and societally beneficial #PersonalizedRealities (PR).
Such PR apps could show us that our (perceptual) worldview is only a subset of what is there to perceive, ...

🫧 In the future, personalized #XR might lead to "perceptual #FilterBubbles" where we only perceive what we want to see (literally!). In the worst case, everyone will have their own filtered version of reality with little to no connection to those of others.
🚀 In our new vision paper...

The image has a header with the text "Christopher Katins, Jannis Strecker, Jan Hinrichs, Pascal Knierim, Bastian Pfleging, Thomas Kosch. 2025. ACM CHI 2025. Ad-Blocked Reality - Evaluating User Perceptions of Content Blocking Concepts Using Extended Reality" and the university logos of the author's institutions: HU Berlin, University of St.Gallen, Universität Innsbrück, TU Bergakademie Freiberg. A collage showing six times the same image with an ad for a soft drink on a billboard. In each image the ad is visually adapted by one of these six concepts: blur, desaturate, partial transparency, full transparency, warning (big sign and "Adblock activated" written beneath), Art (a painting of flowers instead of the ad). Below the images is text with some illustrative icons: Participants preferred... (1) ...appealing and engaging XR ad-block visualizations. (2) ...temporary or permanent blocking depending on the content. (3) ...automatic blocking for sensitive content, manual blocking for other content.

🚀 Happy to share that our paper "Ad-Blocked Reality: Evaluating User Perceptions of Content Blocking Concepts Using Extended Reality" has been accepted at #CHI2025!
We explored how #XR could be used to block content in the physical world, such as ads, and how users perceive this idea.
👇

Ad-Blocked Reality: Evaluating User Perceptions of Content Blocking Concepts Using Extended Reality | HCIstudio Inspired by the concepts of diminishing reality and ad-blocking in browsers, this study investigates the perceived benefits and concerns of blocking physical, real-world content, particularly ads, thr...

This research was conducted in collaboration by Christopher Katins, myself, Jan Hinrichs, Pascal Knierim, Bastian Pfleging, and Thomas Kosch. Thank you all!

👉 Read the full paper here: hu.berlin/ad-blocked-r...

#AdBlocking #AugmentedReality #Advertising #DiminishedReality #AdBlock

While participants saw benefits like improved focus and privacy, concerns around missing important information and isolation also emerged.
Our findings highlight the need for intuitive #XR ad-blocking controls and we provide guidelines for future content-blocking XR design.
👇

The image has a header with the text "Christopher Katins, Jannis Strecker, Jan Hinrichs, Pascal Knierim, Bastian Pfleging, Thomas Kosch. 2025. ACM CHI 2025. Ad-Blocked Reality - Evaluating User Perceptions of Content Blocking Concepts Using Extended Reality" and the university logos of the author's institutions: HU Berlin, University of St.Gallen, Universität Innsbrück, TU Bergakademie Freiberg. A collage showing six times the same image with an ad for a soft drink on a billboard. In each image the ad is visually adapted by one of these six concepts: blur, desaturate, partial transparency, full transparency, warning (big sign and "Adblock activated" written beneath), Art (a painting of flowers instead of the ad). Below the images is text with some illustrative icons: Participants preferred... (1) ...appealing and engaging XR ad-block visualizations. (2) ...temporary or permanent blocking depending on the content. (3) ...automatic blocking for sensitive content, manual blocking for other content.

🚀 Happy to share that our paper "Ad-Blocked Reality: Evaluating User Perceptions of Content Blocking Concepts Using Extended Reality" has been accepted at #CHI2025!
We explored how #XR could be used to block content in the physical world, such as ads, and how users perceive this idea.
👇