The desire to reconnect in an age of perpetual connection shows up in everyday behaviour. People look for companionship, for help with coordination, and for ways to hold experience and share it. Design needs to address each of them.
Shared Space Changes The Interface
The Intimate Machine described interfaces that adapt themselves around an individual. Designing for Togetherness begins when that personalised interface enters shared space and interacts with others’ rhythms. The key question shifts from “what can the system do for me” to “how does it behave around us”.
Calm technology has already advocated for this, viewing attention as a design principle in its own right, with systems that remain quiet most of the time and only intervene when they provide something valuable. The multi-person context raises the stakes because a system that misjudges its timing impacts more than one person.
Companion Use Brought This Into View
The companion boom has served as an early preview. Harvard Business Review’s 2025 analysis of generative AI usage places “therapy and companionship” at the top, showing how normalised this has already become. Companion apps like Replika have been used by tens of millions, with one credible policy-related overview estimating around 25 million. The appeal remains practical: quick responses, memory across different exchanges, a consistent tone, and no friction around availability.
This convenience also reveals a design gap. Most companion interfaces operate as if every moment is exclusively for one person, even though many of those moments happen alongside partners, friends, colleagues, family, and strangers on public transport. Fostering genuine togetherness requires interfaces that can recognise multi-person situations and adapt their behaviour seamlessly, without turning it into a feature announcement. The system can keep its responses concise, its timing less intrusive, and its interaction style suitable for a space where conversation takes priority.
Social Legibility
Shared situations introduce a requirement that personal interfaces can ignore: the people around the device need to understand what it is doing. Earlier interface research described this as social translucence, where behaviour becomes visible in the right way so people can make sense of what is happening and adjust their own choices.
In practice, this means clear signals when the system takes an action that affects a shared moment, reversible interactions, and a sense of control for the people involved. It also touches on privacy and consent. A socially aware interface reads shared context (who is nearby, what the moment is, who becomes part of it) and those signals need clear boundaries, with participation always remaining an active choice.
Togetherness Goes Beyond Coordination
Coordination remains important, as plans often unravel due to small practicalities. Interfaces can assist by centralising shared details and reducing the back-and-forth that wastes momentum. Still, togetherness arises from shared reference and activity: cooking, walking, building something side by side, watching the same film, noticing a small detail and bringing it into conversation later. Designing for these moments involves supporting what people do together.
Shared Attention Mode
Coordination helps people follow through. Shared attention shapes how they experience something together. When a device is within a group, its behaviour can reflect that context. Signals such as proximity, orientation, or placement on a surface already indicate that more than one person is present. In those situations, the interface could shift into a shared state: personal feeds step back, notifications become less intrusive, and the screen prioritises the object or activity in front of everyone.
If two devices are pointed at the sky, both might surface the same reference layer. If a phone is placed face-up during a conversation, it could reduce private prompts and foreground shared content. The goal is compatibility with the social moment. Once attention settles between people, the system reduces its presence and lets the interaction continue.
Where Interfaces Go From Here
Designing for togetherness focuses on how an interface behaves when others are present. It enters shared space, influences timing, and affects how attention shifts through a room. The goal is compatibility with social life. It can support plans without transforming them into processes and help moments pass between people without turning them into content. When the balance feels right, the interface becomes quiet once its role ends, leaving only the interaction between the people involved.
