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MNEMO — clip-on camera worn on a red hoodie
Product Design Interaction Design Wearable Master’s Thesis

MNEMO

A memory system that captures moments the way the brain forms them — triggered by emotion, not by conscious decision.

Role

Concept, Interaction & Product Design

Context

Master’s thesis, HfG Gmünd · with Martha Miosga

Year

2014

Award

🥇 Zukunftspreis Kommunikation

01 — STARTING POINT

Why do we keep moments no camera captures — and forget the ones we photograph?

In 2014, the number of photos people took exploded — and at the same time their value fell. We photographed more and remembered less. Psychology describes the effect: when we take a photo, we outsource remembering to the device.

The brain works differently. It does not store what we want to keep, but what moves us. Emotional moments are consolidated into memories; neutral ones fade.

This became the question of our master’s thesis: Can a camera system remember the way a person does? Not recording everything (lifelogging), not triggering deliberately (photography) — but capturing exactly when emotion arises.

Project

Master’s thesis, HfG Schwäbisch Gmünd — grade 1.0 (top mark)

Team & supervision

Joint project with Martha Miosga
Prof. Ralf Dringenberg · Prof. Jens Döring

Award

First place, “Privacy” category — Zukunftspreis Kommunikation (DVPT / BMWi)

Outcome

  • Hardware system: wristband + camera, 4 wearing options
  • Multiplatform software with Hexagon Navigator
  • Working prototypes & documentation video

02 — RESEARCH

How do memories form — and what triggers them?

Before designing anything, we wanted to understand the phenomenon: cognitive science and the psychology of memory formation, dementia research, the photography market. Then we tested that knowledge against practice — six experts whose job is remembering, and a quantitative survey with 180 responses on memory cues and emotional triggers.

01

Research &
Discovery

Cognitive science · Psychology · Photography market

02

Expert
Interviews

6 experts — memory, dementia, archives, photography

03

Quantitative
Survey

180 responses on memory cues

04

Synthesis &
Affinity

6 opportunity areas · 3 theses · 8 design principles

05

Concept &
System

Wristband · Camera · Software · Interaction logic

06

Hardware
Prototyping

Rhino 3D · Form iterations · Magnetic mechanism

07

Software
Design

Wireframes · Iterations · Multiplatform

Seven phases — from the literature to a working interface, in one semester

Six expert interviews

Six perspectives on memory — photography, gerontology, dementia counselling, University of Tübingen, memory books, Stuttgart city archive

Affinity diagram — synthesis of the research findings

Synthesis — affinity mapping across literature, interviews and survey: 6 opportunity areas

Key insight

Emotion decides what stays — not intention. A memory system therefore must not ask whether to record. It has to feel when.

The synthesis produced three theses and eight design principles — among them: recording without interrupting the moment, reliving instead of managing, and full control for wearers over their own data. The privacy principle later earned the project the Zukunftspreis.

03 — CONCEPT

What does a camera look like that feels rather than asks?

The answer is a system in three parts: a sensor wristband measures the physiological patterns of emotions — pulse, heart rate, skin conductance, skin temperature. When it registers a change, a wirelessly connected clip-on camera automatically records a short video. The software links everything into a memory network you can explore.

First idea sketches

First sketches — from the idea of memory to the system concept

Navigation concept sketches

Sketches for the navigation concept — how do you explore a network of memories?

01 · Wristband

Sensor wearable

  • Pulse & heart rate
  • Skin conductance
  • Skin temperature
  • 4 parameters, measured continuously

detects a change in emotion

02 · Camera

Clip-on camera

  • 3-sec video on emotion
  • 1 image / 30 sec in everyday life
  • Deliberate capture: detach magnetically
  • Discreet, four wearing options

transfers when docked

03 · Software

Memory network

  • Hexagon Navigator
  • Filters: place · time · person
  • Emotion categorisation
  • Digital forgetting

Digital forgetting

Images lose saturation over the years — forgetting becomes visible

System architecture — sensors, recording trigger and data flow into the memory network

Design decision

Three seconds of video — no more.

The recording length matches the rhythm in which the brain processes information into units of memory. Longer would be surveillance, shorter just a photo. This limit was also the most important privacy decision: MNEMO documents moments, not sequences of events. And anyone who wants to take a photo deliberately simply releases the camera from its magnetic mount — automation never replaces intent, it complements it.

04 — PRODUCT

A wearable you forget about — until the moment comes.

The hardware took shape through form iterations in Rhino 3D — magnetic mechanism, material studies, wearing comfort. Four wearing options (clip, necklace, brooch, wristband) let the technology adapt to everyday life, not the other way round. A device that remembers must not draw attention to itself.

MNEMO system components: sensor wristband, clip-on camera and wearing options

The MNEMO system — sensor wristband, magnetic clip-on camera, wearing options

All wearing options for the MNEMO camera

Four wearing options — clip, necklace, brooch, wristband

MNEMO worn as a necklace

In everyday life — the camera as jewellery, not a gadget

Twelve people wearing MNEMO in every variant

A wearable for everyone — twelve people, every wearing option

05 — INTERFACE

How do you navigate feelings?

Folders and timelines organise files — but memories work by association. The software links every recording with place, time, people and emotion into a network. The question was: how do you make that network tangible without it turning into a database?

Wireframe — overview grid

Wireframe — overview as a grid

Wireframe — sidebar navigation

Wireframe — sidebar & detail

Wireframe — filtered view

Wireframe — filtered search

Interface iteration 1 — early hexagon exploration

Iteration 1 — 6 June 2014

Interface iteration 2 — refinement

Iteration 2 — 11 June 2014

Interface iteration 3 — final interface

Iteration 3 — 18 June 2014, final

Three generations in six weeks — each iteration tested against the eight design principles

Design decision

The Hexagon Navigator: the interaction model grows out of the data model.

Six axes — place, time, person, plus joy, surprise, sadness. Instead of search forms and filter lists, users stretch a shape across the axes; its size shows at a glance how many memories the filter covers. Filtering memories by what you felt — not only by when it happened. Earlier iterations with conventional filters failed at exactly this point: they managed memories instead of letting people relive them.

PARAMETER TIME EMOTION SURPRISE EMOTION JOY PARAMETER PLACE PARAMETER PERSON EMOTION SADNESS / FEAR

Parameter axes

Place · time · person — contextual links between memories

Emotion axes

Joy · surprise · sadness — detected through pulse, skin conductance and temperature

Six axes: three parameters, three emotions — the area spanned shows how many memories pass the filter

The navigator in use — the polygon morphs through filter states

Desktop interface: memory overview

Overview — the memory archive as a photo grid

Desktop interface: Hexagon Navigator with filtered memories

Filtered search with the Hexagon Navigator

Desktop interface: map view of the memories

Map view — memories in their spatial context

Tablet view of the MNEMO interface

Multiplatform — the same network on tablet and phone

06 — RECEPTION & REFLECTION

Zukunftspreis Kommunikation 2014

First place in the “Privacy” category — awarded by the DVPT under the patronage of the German Federal Ministry for Economic Affairs and Energy

Master’s thesis, grade 1.0 (top mark)

HfG Schwäbisch Gmünd — Prof. Ralf Dringenberg, Prof. Jens Döring

Lab talk at Intuity, Stuttgart

Invited to present the thesis in a brown-bag session

Press coverage

Regional and trade press, 2014/2015

What remains

In 2014, MNEMO asked the question that is my core topic today: how much autonomy do we give systems that decide for us?

The answer back then — a system that acts automatically but can be deliberately overridden at any time — is the same design principle I apply to human-AI interaction today. What I would do differently now: test the concept earlier with working sensors on the body instead of in scenarios — whether physiological signals detect emotions reliably enough remained an open question in the prototype. What has stayed is the conviction that autonomy needs an interface — not trust in black boxes.

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