Curated articles and essays on spatial computing, voice, gesture, haptics, and brain-computer interfaces — written for curious minds, not just engineers
Before there were headsets and wristbands, there were visionaries who imagined computing without screens. These classic essays still shape how designers think today.
Decades before VR headsets existed, computer scientist Ivan Sutherland imagined a display that could simulate reality so convincingly a chair generated inside it would be one you could actually sit in. This short essay is the founding document of virtual and augmented reality.
Xerox PARC researcher Mark Weiser coined the term "ubiquitous computing" here, arguing that the most profound technologies are the ones that disappear into everyday life. He predicted computers so woven into objects and environments that we'd stop noticing them.
A widely shared critique of "Pictures Under Glass" — flat touchscreens that offer no physical texture or resistance. Victor argues our hands evolved to feel and manipulate a rich physical world, and that true future interfaces must engage that capability, not just our eyes and fingertips sliding on glass.
How headsets, glasses, and cameras are teaching computers to understand and populate three-dimensional space.
Apple's second-generation Vision Pro launched in January 2026 at $2,499 with a lighter design, a faster chip, better hand tracking, and optional controllers — yet Apple sold only around 85,000 units in 2025, a steep decline. Meanwhile Meta's Quest 3 continues to lead the consumer market with roughly half of global headset share. This gap is one of the clearest signals of where spatial computing is actually succeeding: affordable, general-purpose devices over premium niche ones.
Simultaneous Localization and Mapping (SLAM) is the core technique that lets an AR headset or robot know where it is in a room while building a map of that room at the same time — with no GPS and no prior blueprint. It's the invisible engine behind every AR object that convincingly "sticks" to your real floor or wall.
Architecture and product design firms increasingly use mixed-reality headsets to walk clients through full-scale 3D models before construction, catching problems that 2D drawings and even physical scale models miss — from awkward sightlines to uncomfortable ceiling heights.
How speech and body movement are becoming legitimate alternatives to typing and tapping.
Meta's EMG (electromyography) wristband reads the faint electrical signals your muscles send even before your hand visibly moves, letting a wearer scroll, click, or type in the air with tiny, private gestures. At CES 2026, Meta showed the same sensing technology being adapted for car dashboards and accessibility tools, arguing gesture control can succeed where voice can't — like sending a private message in a quiet room.
Voice interfaces are everywhere, from phones to cars to speakers, yet most people still use them for narrow tasks like timers and weather rather than open conversation. Large language models are closing that gap, but questions of trust, error recovery, and social awkwardness (talking to a device in public) remain real design challenges.
Using arrays of tiny ultrasound speakers, researchers can create focused points of pressure in mid-air that feel like buttons, textures, or shapes — no gloves, no controller. This "contactless touch" is now appearing in car dashboards and even hospital elevators, where touching physical buttons is undesirable for hygiene reasons.
The frontier where thought itself becomes an input — still mostly medical, but advancing quickly.
By early 2026, Neuralink's first implant recipient had logged thousands of hours using the device to browse the web, play games, and post on social media through thought alone, with the trial expanding to over a dozen participants. The company announced plans to move to high-volume, largely automated implant surgery in 2026, and is preparing the first trial of "Blindsight," an implant aimed at restoring vision for people who are completely blind.
Not all brain-computer interfaces require surgery. Non-invasive devices like EEG headbands read electrical activity through the scalp — safer but far less precise. Invasive devices implanted directly on or in the brain (like Neuralink's or Synchron's) get a much cleaner signal but carry real surgical risk. This distinction shapes almost everything about what a given BCI can realistically do.
As interfaces read more of the body — muscles, gaze, and eventually neural signals — the questions of consent, privacy, and access become urgent.
As BCI devices move from research labs toward commercial and medical products, policymakers and ethicists are debating "neurorights" — whether raw brain data deserves the same, or stronger, protection than other personal data. Some jurisdictions have begun drafting laws specifically addressing neural data collection and consent.
Many future interfaces — voice control, eye tracking, gesture sensing — were originally developed or refined for accessibility before becoming mainstream conveniences. This reading explores the long history of assistive technology quietly leading interface innovation, and why designing for people with disabilities first tends to produce better interfaces for everyone.