The CHI’25 sustainability committee received many strong submissions for the Special Recognition for Sustainable Practice, and we are excited to announce the winners. As with last year, we recognized projects based on two tracks: (i) Research with Potential for Sustainable Impact and (ii) Research Teams with Inspirational Research Practices. For each category, a winner and runner-up were selected. Without further ado: 
For Research with Potential for Sustainable Impact:

• [Winner] How CO2STLY Is CHI? The Carbon Footprint of Generative AI in HCI Research and What We Should Do About It. Nanna Inie (IT University of Copenhagen), Jeanette Falk (Aalborg University), and Raghavendra Selvan (University of Copenhagen). Discusses the carbon footprint of generative AI in HCI research, calls for attention to how the recent GenAI trend in HCI research would impact the environment, and proposes best practices.

• [Runner-up] Sustainability, Development, and Human-Computer Interaction. Vishal Sharma (Georgia Institute of Technology) and Neha Kumar (Georgia Tech). This work embraces sustainability not only in its focus but also in its execution. From a broad vision, they uncover understandings, critiques, tensions, and considerations toward advancing scholarship at the intersections of sustainability, development, and HCI.

For Research Teams with Inspirational Research Practices:

• [Winner] Unlocking the Power of Speech: Game-Based Accent and Oral Communication Training for Immigrant English Language Learners via Large Language Models. Yijun Zhao (Zhejiang University), Jiangyu Pan (Zhejiang University), Jiacheng Cao (Zhejiang University), Jiarong Zhang (Zhejiang University), Yan Dong (Zhejiang University), Yicheng Wang (Zhejiang University), Preben Hansen (Stockholm University), and Guanyun Wang (Zhejiang University). To ensure broad accessibility on a range of hardware, this work uses Minecraft to build a “serious game” to help people learn English and discusses sustainable design choices in the execution of this work.

• [Runner-up] Layered Interactions: Exploring Non-Intrusive Digital Craftsmanship Design Through Lacquer Art Interfaces. Yan Dong (Tsinghua University), Hanjie Yu (Tsinghua University), Yanran Chen (Tsinghua University), Zipeng Zhang (Tsinghua University, and Wu Qiong (Tsinghua University. Infusing interactivity into traditional crafting, this work embodies making the old new again, demonstrates the power of interaction design, and provides a holistic perspective.

Congratulations to our winners and runner-up, and thank you to everyone who shared their work with us. If you wish to learn more about these projects, please look for them at CHI’25; the projects receiving these recognitions have also been indicated in the program.

Find Your IkiCHI through Japanese Cultural Experiences — Right at the CHI 2025 Venue

Zen Meditation • Japanese-Inspired Yoga • Japanese Tea Ceremony

At CHI 2025, we invite you not only to explore cutting-edge research but also to reconnect with what matters most — your well-being, presence, and sense of purpose. Inspired by this year’s theme of IkiCHI, we are offering three unique opportunities to experience authentic Japanese culture right at the conference venue.

🧘‍♀️ Zen Meditation (60 min, Mon/Tue)
Step into stillness with zazen, the traditional seated meditation practice of Zen Buddhism. Guided by a bilingual monk, this session offers more than just a quiet moment — it’s a chance to reflect, reset, and rediscover your center. No prior experience is needed. Available time slots are as follows:

28 (Mon) 11:00 – 12:00 / 30 people
28 (Mon) 13:30 – 14:30 / 30 people
28 (Mon) 15:00 – 16:00 / 30 people
29 (Tue) 9:30 – 10:30 / 30 people
29 (Tue) 11:00 – 12:00 / 30 people
29 (Tue) 13:30 – 14:30 / 30 people
29 (Tue) 15:00 – 16:00 / 30 people

🧘 Japanese-Inspired Yoga (60 min, Mon/Tue)
Rebalance your body and mind through gentle movements rooted in Japanese mindfulness practices. Open to all levels, this yoga session helps you breathe deeper, move with intention, and carry a sense of calm into the rest of your CHI experience. Available time slots are as follows:

28 (Mon) 11:00 – 12:00 / 30 people
28 (Mon) 13:30 – 14:30 / 30 people
28 (Mon) 15:00 – 16:00 / 30 people
29 (Tue) 9:30 – 10:30 / 30 people
29 (Tue) 11:00 – 12:00 / 30 people
29 (Tue) 13:30 – 14:30 / 30 people
29 (Tue) 15:00 – 16:00 / 30 people

🍵 Japanese Tea Ceremony (45 min, Wed)
Find beauty in simplicity. This tea ceremony invites you to slow down and immerse yourself in one of Japan’s most cherished traditions. Enjoy matcha and seasonal sweets while learning the graceful rituals that embody harmony, respect and zen spirit. Soko (Koji) Yatani guides you to Japanese aesthetics and hospitality. Available time slots are as follows:

30 (Wed) 09:30 – 10:15 / 40 people
30 (Wed) 10:15 – 11:00 / 40 people
30 (Wed) 11:00 – 11:45 / 40 people
30 (Wed) 11:45 – 12:30 / 40 people
30 (Wed) 13:45 – 14:30 / 40 people
30 (Wed) 14:30 – 15:15 / 40 people
30 (Wed) 15:15 – 16:00 / 40 people

In the spirit of Ikigai, these experiences offer a gentle pause — a way to reconnect with your inner purpose, engage with local culture, and bring fresh energy to the meaningful work we do together.

All activities take place at the CHI 2025 venue. Each session is $12. Space is limited — sign up early to reserve your spot via our registration system (CVENT).

https://cvent.me/g5mx2w

On-site sign-up and payment are not accepted, so please register in advance!

Dear Authors,

Congratulations again on having your work accepted at CHI2025! This email is about your presentations, and if you are not the presenting author, please forward this email to the presenting authors. 

This year, we have an exciting and extensive program, with record numbers of technical contents across all tracks! Among them, Papers, Journals, Alt.chi, and Case studies will have oral presentations. While you might have done presentations at CHI, this year, we have a number of differences, so please read the instructions carefully to ensure a great presentation experience:

• To accommodate a record number of oral presentations, the time slot for each presentation is much shorter than previous years, which is 10 minutes for presentations and 2 minutes for Q&A and there will be a maximum number of 7 presentations in a 90-minute session.  
• This year, we have in-person and remote sessions, but both will be held on-site with in-person session chairs and audience. Remote sessions are for authors who cannot attend in-person to present remotely via Zoom to the on-site audience. 
• Remote attendees cannot join the session live via Zoom but could watch presentation videos asynchronously on the SIGCHI Conference Programmes progressive web application (PWA) and ask questions via PWA. 

As such, as a presenter, you should expect: 

• If you present in-person, it will be very much like previous in-person conferences. There will be an HDMI cable to connect with a project. Please ensure that you bring an adapter for HDMI.
• If you present remotely,  simply join the Zoom link, which you can find in the PWA, as you would for a regular online meeting to give your live presentation to an on-site audience. 

Here are the instructions for the presentation:

• Before the presentation, please use PWA to double-check the time/date.
  • For an in-person presentation, also double check the room of the session you are presenting. 
  • For a remote presentation, confirm the Zoom link given in the PWA for the allocated session. Only remote presenters in the session would be allowed to enter by the session chair or SVs during the session. 
• Arrive 20 min before the session starts, check in with your session chair, and test the presentations, leaving plenty of time to fix issues if any. 
  • For an in-person presentation, you will use your own laptop to connect to a projector via HDMI. Please ensure that you bring an adapter for HDMI. Please also bring a copy of your presentation on a USB drive as a backup.
    • There is a dedicated computer in each room to perform auto-captioning. Note that you cannot use that computer to connect to a projector.
  • For a remote presentation, make sure you can connect and present via the Zoom link, and please also have your presentation videos readily available as a backup in case of any technical issues. 
• Please finish within your allocated time which is 12 minutes in total, with 10 minutes for presentation and 2 minutes for Q&A.  If you do not stop and use up all the 12 minutes, there will be no time for Q&A, and you will be cut off by the session chair at the 12 minutes to allow the next presenter to set up
  • For an in-person presentation, pay attention to the session chair’s countdown signals, at the 3, 1, 0 minutes prior 10 minutes to give some time for Q&A.
  • If it is a remote presentation, you will be responsible for keeping track of your time and will also be cut off at the 12 minutes.
• As the time for Q&A in a session is very short this year, you are encouraged to make use of coffee or lunch breaks if you attend the conference in-person. Please also make sure of PWA to interact and carry on discussions, to compensate for the short Q&A time.

How to show your slides in the in-person meeting room

For in-person presenters:

An HDMI cable is on or around a presenter’s table, which is directly connected to a project in the meeting room. You must use this HDMI cable to connect your laptop to show your slides in the meeting room, which is very much like previous in-person conferences.

For remote presenters:

All presenters must join a Zoom meeting for their presentation. Presenters will share their screen on the Zoom meeting to show their slides, which is the same as other Zoom meetings. A laptop that is running Zoom Rooms (meetings) and is connected to a projector in the room, will show your slides via Zoom meetings. 

Even if you cannot connect to a project, please use another computer (e.g., ones owned by other presenting authors). It is a good practice to have a copy of your presentation material in your USB key.

We look forward to your presentations at CHI2025. If you have any questions, please let us know via tpc@chi2025.acm.org.

Koji Yatani and Sharon Ding

CHI2025 Technical Program Chairs

Venue

PACIFICO Yokohama North Yokohama, Japan
1-chōme-1-1 Minatomirai, Nishi Ward, Yokohama, Kanagawa 220-0012, Japan

CHI Registration Check-in
You will receive an email from info@eventstack.com with your registration QR code on Friday, April 25th. Bring this to the Registration Desk located in North 1F of the PACIFICO Yokohama to scan with the registration scanners for event check-in and pick up your badge.

Welcome

Whether it be in-person or online, we are excited to have you join CHI 2025!

Workshops will take place on April 26th and April 27th.

Courses and main conference content will occur from April 28th to May 1st.

Be sure to attend the Opening Plenary at National Hall on Monday, April 28th at 8:45 JST. National Hall is located on the southern end of the PACIFICO Yokohama complex and can be accessed via a pedestrian walkway from PACIFICO Yokohama North.

There is a lot of helpful information at https://chi2025.acm.org/ to help you plan your days either virtually (online) or in person at CHI.

Conference Program

The full conference program can be found on the Progressive Web App (PWA): https://programs.sigchi.org/chi/2025.

Attending CHI 2025 in-person in Yokohama

In-person CHI 2025 will take place at the PACIFICO Yokohama North, in Yokohama, Japan. CHI 2025 events are located all throughout the Center with registration check-in being placed in the main hall foyer.

Be sure to first check in at registration to get your CHI 2025 badge and bring your QR Code!

Registration Check-in and Hours

Check-in for your CHI badge early! Do so on Sunday to avoid long lines on Monday morning! Photo identification is required to check-in. Be sure to bring any kind of photo ID – passport, student ID, driver’s license, etc. – for registration check-in.

Registration and Badge Pick Up Hours Onsite

Saturday – 8:00 to 16:00
Sunday – 8:00 to 20:00
Monday – 7:00 to 19:00
Tuesday – 8:00 to 17:30
Wednesday – 8:30 to 16:00
Thursday – 8:30 to 11:00

We highly encourage you to pick up your badge Saturday or Sunday. Historically, we have seen long lines on Monday morning. We don’t want anyone to miss the Opening Plenary, so come get your badge early.

CHI Plushie Hours

CHI Plushies can only be purchased and picked up in Japan at the Merchandise counter located at Registration in North 1F. Shipping is not available for CHI Merchandise. If you are virtual, connect with a friend going to CHI in-person to have them purchase merchandise for you! Please note that CHI Plushies can only be purchased with a credit card. Merchandise is limited in availability.

All times listed below are in JST:
Tuesday – 10:30 to 16:00
Wednesday – 10:30 to 16:00

CHI Pavillion Hours (North 1F: G1-G8)

Monday, 28 April 18:00 – 20:00 (Welcome Reception)
Tuesday, 29 April 10:00 – 17:00 (Job Fair 15:40 – 16:20)
Wednesday, 30 April 10:00 – 17:00 (Job Fair 15:40 – 16:20)
Thursday, 1 May 10:00 – 12:00

Don’t Miss the Action in the CHI Pavilion!

Make sure to explore the CHI Pavilion, where you’ll find our amazing sponsors and exhibitors, plus Interactivity demos, posters, the Invited Talks Theatre, Global Plaza, SIGCHI Lounge, and much more!

Participating in the CHI Interactivity Demos?

You’ll need to complete the ACM demo participation waiver to take part. To save time on site and experience more demos, we strongly encourage you to fill it out in advance: https://forms.office.com/r/5RSsCwYh9Q

Attending CHI 2025 Virtually and In-Person

The Progressive Web App (PWA) – CHI Virtual Platform

The PWA is where all the content of the conference is available. It is also where you will officially ask questions. Please note that paper sessions are not streamed synchronously but the video presentations can be watched and discussed at any time by all attendees whether you are registered virtual or in-person. More information about the hybrid experience: https://chi2025.acm.org/for-attendees/hybrid-experience/

CHI Communication is on Discord!

Discord is used for General Discussions, e.g., general research discussions and social chatting during CHI 2025. It requires a personal account to log in. A personal account can be created for free at https://discord.com/. With this you can join the CHI 2025 Discord here: https://discord.gg/connect-at-CHI2025. Please note that the Hybrid Team will not be officially active on Discord until April 26th. If you are completely new to Discord – this is a helpful resource to get started: Beginner’s Guide to Discord

• Upon entering the Discord, please accept the Code of Conduct in #code-of-conduct, and message the CHI25 Bot with the email address used for registration to gain full access to all CHI 2025 channels. (A detailed walk-through to joining Discord can be found here: https://chi2025.acm.org/for-attendees/hybrid-experience/online-tools-used-in-chi-2025/)Ask any questions that you may have at the #help-desk channel regarding the hybrid experience or mail the hybrid chairs at hybrid@chi2025.acm.org
• The following channels are initially setup
  • #code-of-conduct (read this carefully)
  • #first-steps (guides you through the onboarding process)
  • #hybrid-faq (has some FAQ about the hybrid aspects of CHI)
  • #chi-lobby (open discussion floor)
  • #meeting-people-online (to connect with other remote attendees)
  • #meeting people-onsite (to connect with other on-site attendees)

If you want to ask questions regarding a particular paper or other content item, please use PWA, as outlined above.

Useful Information for CHI In-Person CHI Attendees

We are seeing historically high registration numbers for this year’s in-person conference, Here are some tips to make the most of your experience:

• If a session is too full, you are welcome to stand on the perimeter of the room
• All paper presentations have been pre-recorded and are available to watch on the PWA (see above)
• Engage with authors through PWA or Discord for questions you don’t get to ask in-person
• Keep accessibility-labeled seating available to those who need it
• Learn more about Japanese culture
  • Zen, yoga, and tea ceremonies are being offered for $12 each during the conference. Find more details here:
    https://chi2025.acm.org/travel/getting-around-yokohama/#culture
  • Tatami and calligraphy sessions are being offered during the opening reception on Monday night (no charge, first-come-first-served basis)
  • Kanna-kezuri (wood shaving) demonstration will be in the CHI pavilion during coffee breaks on Wednesday (no charge, first-come-first-served basis)
  • An origami booth will be set up in the CHI pavilion, available during all CHI Pavilion hours (no charge)
• Free Wi-Fi is available at the airport and CHI venue, but we recommend setting up mobile internet and installing a translation app to help with things like reading menus and asking for help.
• For easy travel, add a Suica, PASMO, or ICOCA card to your phone and charge it with ¥5,000–¥10,000. It works for most trains in Japan and even some stores.
• Some medications (e.g., ADHD or sleep aids) are restricted in Japan—check permit requirements here: https://www.mhlw.go.jp/english/policy/health-medical/pharmaceuticals/01.html

Any Help Needed? Contact:
chiregistration@executivevents.com

1-888-526-1242 USA/Canada Toll Free
1-303-530-4683 International Direct Dial

We look forward to seeing you all at CHI 2025!

We are excited to have two inspiring keynote talks!

Opening Keynote

Mutale Nkonde – AI for the People, Computing for a Better World

In this keynote, Mutale Nkonde explores how Black Queer theory has shaped the vision and practice of AI for the People, a Black female-led nonprofit that operates at the intersection of technology, racial justice, and global policy. Drawing from her organization’s work advocating for ethical and inclusive AI on international platforms, Nkonde challenges dominant narratives in tech by centering social impact over technological innovation. She argues that when we begin with the question, “Who is affected, and how?”, rather than “What can this technology do?”, we open up possibilities for more just and human-centered AI systems.

Nkonde further unpacks how marginalized perspectives—particularly those informed by Black feminist and queer thought—offer critical tools for identifying and addressing bias, surveillance, and discrimination embedded in algorithmic systems. By examining real-world policy efforts and advocacy strategies, she invites participants to reflect on the ways bias can be actively countered through inclusive design practices, equitable data governance, and values-driven development processes.

This keynote calls on designers, educators, and researchers to consider how they might incorporate these critical perspectives into their own product teams, classrooms, and labs—not only to mitigate harm, but to reimagine AI as a tool for collective liberation.

 
Mutale Nkonde (she/her) is a policy advisor, researcher, and founder of AI for the People, a nonprofit organization that works at the intersection of technology, society, and justice. Her work focuses on identifying and reducing algorithmic bias in the design, deployment, and governance of AI systems—particularly those that shape public life.

Nkonde first gained national attention as the lead advocate for the Algorithmic Accountability Act, introduced in the U.S. House of Representatives in 2019, during her time as a fellow at Data & Society. Since then, she has led AI for the People in providing strategic advisory services to institutions such as the Biden-Harris White House, the United Nations, TikTok’s Content Moderation Advisory Board, and soon, the UK House of Commons. In 2025, her organization expanded into shareholder activism, using proxy votes to influence the ethical direction of major AI companies—securing an early victory in support of DEI policies at Apple.

Nkonde holds a BSc (Hons) in Sociology from Leeds Metropolitan University, a Master’s in American Studies from Columbia University, and is currently pursuing a PhD at the University of Cambridge. She has held fellowships at Stanford, Notre Dame, and is currently a Visiting Policy Fellow at the Oxford Internet Institute. Her work bridges policy, design, and emerging technologies, inviting interdisciplinary collaboration to build more inclusive and accountable AI systems.

Closing Keynote

Masako Wakamiya – Designing Beyond Age: Rethinking Inclusion and Interaction in a 100-Year Life

As societies shift toward unprecedented longevity, HCI faces a compelling challenge and opportunity: How do we design technologies that not only accommodate—but empower—users across all stages of life?

In this keynote, Masako Wakamiya shares her lived experience as a late-blooming technologist, digital artist, and active community contributor. Through her journey—from learning computing in her 60s to developing an app for older adults in her 80s—she invites HCI professionals to reconsider assumptions about aging, usability, and agency. Wakamiya reminds us that while aging may bring changes in cognitive and physical abilities, it also deepens emotional insight, strengthens interpersonal connections, and enriches one’s capacity to contribute meaningfully. She challenges the field to move beyond accessibility toward true participation, where older users are not just end-users but co-creators and storytellers. Her insights underscore the need for age-inclusive design practices that not only adapt to changing needs but also celebrate what endures and grows with age—curiosity, creativity, empathy, and community. This talk is both a critique and a call to action—for more empathetic, flexible, and empowering human-computer interaction that supports lifelong learning, connection, and contribution across the lifespan.

 
Masako Wakamiya is a pioneering digital creator and a passionate advocate for age-inclusive technology. Now 90 years old, she entered the digital world in her 60s, developed her first iPhone app at age 81 to serve older users, and continues to speak globally on intergenerational design and inclusive innovation. She is a board member of Mellow Club, a social network for seniors, and advises the Japanese government’s “Digital Garden City” initiative. Wakamiya’s creative use of Excel as an artistic medium and her app “Hinadan” have attracted international attention, including from Apple CEO Tim Cook and Taiwan’s Minister of Digital Affairs.