Pixel Memories: Do Lifelog Summaries Fail to Enhance Memory but Offer Privacy-Aware Memory Assessments?

Passant Elagroudy; Rufat Rzayev; Tonja Katrin Machulla; Huy Viet Le; Tilman Dingler; Lars Lischke; Sarah Clinch; Geoffrey Ward; Albrecht Schmidt

doi:10.1145/3706598.3714145

Pixel Memories: Do Lifelog Summaries Fail to Enhance Memory but Offer Privacy-Aware Memory Assessments?

Passant Elagroudy
, Rufat Rzayev
, Tonja Katrin Machulla
, Huy Viet Le
, Tilman Dingler
, Lars Lischke
, Sarah Clinch
, Geoffrey Ward
, Albrecht Schmidt

User-Centric Data Science (UCDS)

Research output: Chapter in Book / Report / Conference proceeding › Conference contribution › Academic › peer-review

Abstract

We explore the metaphorical "daily memory pill"concept - a brief pictorial lifelog recap aimed at reviving and preserving memories. Leveraging psychological strategies, we explore the potential of such summaries to boost autobiographical memory. We developed an automated lifelogging memory prosthesis and a research protocol (Automated Memory Validation "AMV") for conducting privacy-aware, in-situ evaluations. We conducted a real-world lifelogging experiment for a month (n=11). We also designed a browser "Pixel Memories"for browsing one-week worth of lifelogs. The results suggest that daily timelapse summaries, while not yielding significant memory augmentation effects, also do not lead to memory degradation. Participants' confidence in recalled content remains unaltered, but the study highlights the challenge of users' overestimation of memory accuracy. Our core contributions, the AMV protocol and "Pixel Memories"browser, advance our understanding of memory augmentations and offer a privacy-preserving method for evaluating future ubicomp systems.

Original language	English
Title of host publication	CHI '25: Proceedings of the 2025 CHI Conference on Human Factors in Computing Systems
Editors	Naomi Yamashita, Vanessa Evers, Koji Yatani, Xianghua (Sharon) Ding, Bongshin Lee, Marshini Chetty, Phoebe Toups-Dugas
Publisher	Association for Computing Machinery
Pages	1-17
Number of pages	17
ISBN (Electronic)	9798400713941
DOIs	https://doi.org/10.1145/3706598.3714145
Publication status	Published - 2025
Event	2025 CHI Conference on Human Factors in Computing Systems, CHI 2025 - Yokohama, Japan Duration: 26 Apr 2025 → 1 May 2025

Publication series

Name	Conference on Human Factors in Computing Systems - Proceedings

Conference

Conference	2025 CHI Conference on Human Factors in Computing Systems, CHI 2025
Country/Territory	Japan
City	Yokohama
Period	26/04/25 → 1/05/25

Bibliographical note

Publisher Copyright:
© 2025 Copyright held by the owner/author(s). Publication rights licensed to ACM.

Keywords

case study
lifelogging
memory research
privacy
recall

Access to Document

10.1145/3706598.3714145

Persistent URL (handle)

Persistent link

Cite this

Elagroudy, P., Rzayev, R., Machulla, T. K., Le, H. V., Dingler, T., Lischke, L., Clinch, S., Ward, G., & Schmidt, A. (2025). Pixel Memories: Do Lifelog Summaries Fail to Enhance Memory but Offer Privacy-Aware Memory Assessments? In N. Yamashita, V. Evers, K. Yatani, X. Ding, B. Lee, M. Chetty, & P. Toups-Dugas (Eds.), CHI '25: Proceedings of the 2025 CHI Conference on Human Factors in Computing Systems (pp. 1-17). Article 835 (Conference on Human Factors in Computing Systems - Proceedings). Association for Computing Machinery. https://doi.org/10.1145/3706598.3714145

Elagroudy, Passant ; Rzayev, Rufat ; Machulla, Tonja Katrin et al. / Pixel Memories : Do Lifelog Summaries Fail to Enhance Memory but Offer Privacy-Aware Memory Assessments?. CHI '25: Proceedings of the 2025 CHI Conference on Human Factors in Computing Systems. editor / Naomi Yamashita ; Vanessa Evers ; Koji Yatani ; Xianghua (Sharon) Ding ; Bongshin Lee ; Marshini Chetty ; Phoebe Toups-Dugas. Association for Computing Machinery, 2025. pp. 1-17 (Conference on Human Factors in Computing Systems - Proceedings).

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title = "Pixel Memories: Do Lifelog Summaries Fail to Enhance Memory but Offer Privacy-Aware Memory Assessments?",

abstract = "We explore the metaphorical {"}daily memory pill{"}concept - a brief pictorial lifelog recap aimed at reviving and preserving memories. Leveraging psychological strategies, we explore the potential of such summaries to boost autobiographical memory. We developed an automated lifelogging memory prosthesis and a research protocol (Automated Memory Validation {"}AMV{"}) for conducting privacy-aware, in-situ evaluations. We conducted a real-world lifelogging experiment for a month (n=11). We also designed a browser {"}Pixel Memories{"}for browsing one-week worth of lifelogs. The results suggest that daily timelapse summaries, while not yielding significant memory augmentation effects, also do not lead to memory degradation. Participants' confidence in recalled content remains unaltered, but the study highlights the challenge of users' overestimation of memory accuracy. Our core contributions, the AMV protocol and {"}Pixel Memories{"}browser, advance our understanding of memory augmentations and offer a privacy-preserving method for evaluating future ubicomp systems.",

keywords = "case study, lifelogging, memory research, privacy, recall",

author = "Passant Elagroudy and Rufat Rzayev and Machulla, \{Tonja Katrin\} and Le, \{Huy Viet\} and Tilman Dingler and Lars Lischke and Sarah Clinch and Geoffrey Ward and Albrecht Schmidt",

note = "Publisher Copyright: {\textcopyright} 2025 Copyright held by the owner/author(s). Publication rights licensed to ACM.; 2025 CHI Conference on Human Factors in Computing Systems, CHI 2025 ; Conference date: 26-04-2025 Through 01-05-2025",

year = "2025",

doi = "10.1145/3706598.3714145",

language = "English",

series = "Conference on Human Factors in Computing Systems - Proceedings",

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editor = "Naomi Yamashita and Vanessa Evers and Koji Yatani and Ding, \{Xianghua (Sharon)\} and Bongshin Lee and Marshini Chetty and Phoebe Toups-Dugas",

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Elagroudy, P, Rzayev, R, Machulla, TK, Le, HV, Dingler, T, Lischke, L, Clinch, S, Ward, G & Schmidt, A 2025, Pixel Memories: Do Lifelog Summaries Fail to Enhance Memory but Offer Privacy-Aware Memory Assessments? in N Yamashita, V Evers, K Yatani, X Ding, B Lee, M Chetty & P Toups-Dugas (eds), CHI '25: Proceedings of the 2025 CHI Conference on Human Factors in Computing Systems., 835, Conference on Human Factors in Computing Systems - Proceedings, Association for Computing Machinery, pp. 1-17, 2025 CHI Conference on Human Factors in Computing Systems, CHI 2025, Yokohama, Japan, 26/04/25. https://doi.org/10.1145/3706598.3714145

Pixel Memories: Do Lifelog Summaries Fail to Enhance Memory but Offer Privacy-Aware Memory Assessments? / Elagroudy, Passant; Rzayev, Rufat; Machulla, Tonja Katrin et al.
CHI '25: Proceedings of the 2025 CHI Conference on Human Factors in Computing Systems. ed. / Naomi Yamashita; Vanessa Evers; Koji Yatani; Xianghua (Sharon) Ding; Bongshin Lee; Marshini Chetty; Phoebe Toups-Dugas. Association for Computing Machinery, 2025. p. 1-17 835 (Conference on Human Factors in Computing Systems - Proceedings).

Research output: Chapter in Book / Report / Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Pixel Memories

T2 - 2025 CHI Conference on Human Factors in Computing Systems, CHI 2025

AU - Elagroudy, Passant

AU - Rzayev, Rufat

AU - Machulla, Tonja Katrin

AU - Le, Huy Viet

AU - Dingler, Tilman

AU - Lischke, Lars

AU - Clinch, Sarah

AU - Ward, Geoffrey

AU - Schmidt, Albrecht

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N2 - We explore the metaphorical "daily memory pill"concept - a brief pictorial lifelog recap aimed at reviving and preserving memories. Leveraging psychological strategies, we explore the potential of such summaries to boost autobiographical memory. We developed an automated lifelogging memory prosthesis and a research protocol (Automated Memory Validation "AMV") for conducting privacy-aware, in-situ evaluations. We conducted a real-world lifelogging experiment for a month (n=11). We also designed a browser "Pixel Memories"for browsing one-week worth of lifelogs. The results suggest that daily timelapse summaries, while not yielding significant memory augmentation effects, also do not lead to memory degradation. Participants' confidence in recalled content remains unaltered, but the study highlights the challenge of users' overestimation of memory accuracy. Our core contributions, the AMV protocol and "Pixel Memories"browser, advance our understanding of memory augmentations and offer a privacy-preserving method for evaluating future ubicomp systems.

AB - We explore the metaphorical "daily memory pill"concept - a brief pictorial lifelog recap aimed at reviving and preserving memories. Leveraging psychological strategies, we explore the potential of such summaries to boost autobiographical memory. We developed an automated lifelogging memory prosthesis and a research protocol (Automated Memory Validation "AMV") for conducting privacy-aware, in-situ evaluations. We conducted a real-world lifelogging experiment for a month (n=11). We also designed a browser "Pixel Memories"for browsing one-week worth of lifelogs. The results suggest that daily timelapse summaries, while not yielding significant memory augmentation effects, also do not lead to memory degradation. Participants' confidence in recalled content remains unaltered, but the study highlights the challenge of users' overestimation of memory accuracy. Our core contributions, the AMV protocol and "Pixel Memories"browser, advance our understanding of memory augmentations and offer a privacy-preserving method for evaluating future ubicomp systems.

KW - case study

KW - lifelogging

KW - memory research

KW - privacy

KW - recall

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U2 - 10.1145/3706598.3714145

DO - 10.1145/3706598.3714145

M3 - Conference contribution

AN - SCOPUS:105005709101

T3 - Conference on Human Factors in Computing Systems - Proceedings

SP - 1

EP - 17

BT - CHI '25: Proceedings of the 2025 CHI Conference on Human Factors in Computing Systems

A2 - Yamashita, Naomi

A2 - Evers, Vanessa

A2 - Yatani, Koji

A2 - Ding, Xianghua (Sharon)

A2 - Lee, Bongshin

A2 - Chetty, Marshini

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PB - Association for Computing Machinery

Y2 - 26 April 2025 through 1 May 2025

ER -

Elagroudy P, Rzayev R, Machulla TK, Le HV, Dingler T, Lischke L et al. Pixel Memories: Do Lifelog Summaries Fail to Enhance Memory but Offer Privacy-Aware Memory Assessments? In Yamashita N, Evers V, Yatani K, Ding X, Lee B, Chetty M, Toups-Dugas P, editors, CHI '25: Proceedings of the 2025 CHI Conference on Human Factors in Computing Systems. Association for Computing Machinery. 2025. p. 1-17. 835. (Conference on Human Factors in Computing Systems - Proceedings). Epub 2025 Apr 25. doi: 10.1145/3706598.3714145

Pixel Memories: Do Lifelog Summaries Fail to Enhance Memory but Offer Privacy-Aware Memory Assessments?

Abstract

Publication series

Conference

Bibliographical note

Keywords

Access to Document

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