Quando mi sono spostato dalla progettazione per il web e il mobile alla progettazione per la VR, il mio primo controllo di realtà è venuto dalla cosa più quotidiana immaginabile: digitare un indirizzo e-mail. Questo richiede meno di dieci secondi su un telefono. ma quando devi farlo lettera per lettera, puntando laser tremolanti su una tastiera virtuale galleggiante, che potrebbe richiedere fino a un minuto. According to multiple studies, controller‑based typing on VR keyboards averages about  , with error rates of around 7% or higher. A smartphone gets about   at roughly a 2% error rate, and a physical keyboard does about   with error rates around 1%. 15 to 25 words per minute 36 words per minute 35 to 65 words per minute 15 to 25 words per minute 36 words per minute 35 to 65 words per minute 
 
 A simple text entry in VR is roughly half the speed of a phone and three to four times more error-prone. A simple text entry in VR is roughly half the speed of a phone and three to four times more error-prone. VR opens up lots of possibilities, but also makes some of the most basic things painfully hard. Below is a list of things that we take for granted in other media that need extra tender loving care when you’re working in VR. Every Form Field Is a Roadblock Twenty words per minute with a 7% error rate is already quite sad, and that's when the user is holding two controllers. It gets considerably worse when you remember that many of the most popular VR apps are built around sports like golf, boxing, baseball, cricket, hockey, fitness, and table tennis, where sports equipment enters the picture. A controller strapped to a bat attachment, slotted into a golf club grip, or clipped onto a hockey stick mount stops being an “input device” and becomes purely a “tracking device.” Any text input now needs to be done with the remaining controller, one-handed, which is even slower. Of course, any time the user needs to enter their name, session number, or find their team, you can force them to unstrap the controller, type, re-mount it, and recalibrate mid-session. Not exactly a delightful user experience. Despite the fact that Meta has built dictation into the Quest OS, and open-source speech recognition now runs locally on Quest 3 hardware, voice hasn't become the primary input method for search or text entry in any major VR app yet. Meta has also been experimenting with surface-detected keyboards that turn a desk into a typing surface, and researchers at Meta and ETH Zurich managed to reach 37 words per minute with it. But these are still research prototypes, not something you can build a product around today. So what do VR apps do about this? They treat text input as a problem to solve  La creazione dell'account, la configurazione del profilo, la gestione dell'abbonamento, la configurazione del team avvengono in anticipo su un telefono o un computer. Supernatural dirige l'intera configurazione dell'account attraverso un'app di compagnia mobile. FitXR fornisce agli abbonati web un breve codice di attivazione da digitare in VR invece di immettere una email e una password. NHL Sense Arena utilizza un PIN invece di una password completa per l'accesso all' headset. Una volta iniziata la sessione VR, ogni interazione diventa punto e clic: scatolatori, selettori di corsi, slider di difficoltà, elenchi di team, ecc. before 
 
 The principle is simple: assume you will not be able to ask the user to type anything once the VR session is in progress, and design backwards from there. The principle is simple: assume you will not be able to ask the user to type anything once the VR session is in progress, and design backwards from there. In practical terms, this means that most serious fitness, training, and productivity VR apps end up shipping a companion mobile app or a web portal alongside the headset experience. That’s not a nice-to-have or a bonus feature, but a core part of the product architecture. Safety Is Your Problem Now Ecco la seconda cosa che mi ha sorpreso:   . Guardian (or "Boundary," as Meta now calls it) simply draws a perimeter on the ground and warns you when you approach it. It has no idea how high your ceiling is, whether there's a fan above your head, or how close your hand is to a shelf on the wall. safety system built into every Meta Quest headset is fundamentally two-dimensional This matters a lot for physical activity apps, because people in VR don’t usually hurt themselves by walking into walls. They punch ceiling fans and knock TVs off shelves. When a user mounts a controller to a bat, a golf club, or a hockey stick, their reach extends by two to three feet (60 to 90 cm), but Guardian has no way of knowing that. You can draw a perfect boundary on the floor and still smash a light fixture or hurt someone on the backswing. , and fractures accounted for about 30% of those visits. A study presented at CHI 2023 that analyzed videos from the r/VRtoER subreddit found that   was people and pets walking into the play area. Even Meta's Space Sense feature, which shows silhouettes of people entering your space, doesn't help much. The headset's cameras are all mounted on the front and bottom of the device, so anyone approaching from behind is basically invisible. And even when Space Sense does detect someone in front of you, it might be ineffective during fast-paced activity like boxing, because by the time you see the outline, you’ve already swung. VR‑related emergency room visits in the U.S. increased more than 4x between 2017 and 2021 one of the most common accident types one of the most common accident types Some apps are experimenting with mixed-reality passthrough modes where you can see your real room overlaid with the game. FitXR and Les Mills BodyCombat both offer this, but it’s marketed as an  , not a safety feature, and it’s optional. immersion feature There are straightforward design decisions that could help here. An app that knows the user is about to use a club, a stick, or any mounted equipment could require a larger play space during setup and refuse to start the session if the boundary is too small. It could prompt users to confirm their ceiling is clear, or remind them to clear the room of pets and children before a boxing session. The platform won't do any of this for you, so if your app involves physical movement, these checks need to be part of your product. UI Without a Screen Edge Working with UI in VR means rethinking the interaction patterns, layout conventions, and information architecture you’re used to from web and mobile. There’s no above-the-fold, no sticky header, no full-screen mode, no screen edge to anchor a nav bar to. There’s no scrolling in the traditional sense, as you navigate the interface by looking, turning, and reaching.  becomes a real design variable because elements exist at actual physical distances from the user’s eyes, measured in dmm (distance-independent millimeters, where 1 dmm equals 1 mm at 1 meter from the user) rather than pixels. Placing something too close feels intrusive while placing it too far makes it unreadable. Distance Prendi un pannello rettangolare piatto, ad esempio. Funziona bene su un monitor perché lo schermo è piccolo rispetto alla tua distanza da esso, quindi la differenza tra il centro e i bordi è trascurabile. In VR, i pannelli UI tendono a riempire una parte molto più grande del tuo campo visivo, e su quella scala, una superficie piatta significa che i bordi sono fisicamente più lontani dai tuoi occhi rispetto al centro. Il testo diventa più difficile da leggere, i bersagli touch diventano più difficili da colpire. Qualsiasi UI ampio in VR deve curvare per mantenere la stessa distanza dagli occhi dell'utente. 
 
 The comfortable field of view for interaction in VR is much smaller than you’d expect. The comfortable field of view for interaction in VR is much smaller than you’d expect. The standard approach to laying out VR interfaces is equirectangular projection, which flattens the full 360-degree environment into a 2:1 rectangle. If you think of it as a canvas, the full space is 3600 by 1800 pixels. But the zone where a user can comfortably read and interact without turning their head is only the central 1200 by 600 pixels, about a third of the width and a third of the height. Everything outside that requires physical head movement, and interactions that require constant turning cause real neck fatigue over time. This constraint becomes a design opportunity once you stop thinking in screens and pages. You have 360 degrees of real estate around the user, and the ability to place information at different distances and anchor it either to the world or to the user’s body. There are several main patterns that apps use: 
 
 
 
 
  is fixed in the virtual environment, like a scoreboard mounted on a wall. It stays in place when the user turns away. World-anchored UI  is attached to the user's torso direction. It follows you around but doesn't track your head. Turning your head to look around doesn't move the interface, but it's always there when you look forward again. This gives the user a stable reference point without locking something to their face. Body-anchored UI Questo è generalmente considerato una cattiva prassi perché causa nausea, ma può essere utilizzato scrupolosamente per brevi notifiche che appaiono per un secondo e scompaiono.  is information built directly into the game world itself, like health displayed on a weapon or training stats shown on a virtual wristwatch. It's the hardest approach to get right, but when it works, users don't even feel that they're looking at an interface. Diegetic UI None of these ideas is rocket science, but they do require you to change how you think about interaction compared to web and mobile. You need to spend hours in VR to learn what   in terms of distance, size, and placement, so you can start using depth and spatial position the same way you use color or animation on a flat screen. feels right The Patterns Are Being Written in Real Time VR as a design space is still being developed and is changing fast. Meta ships new SDK features and interaction models almost every quarter. Hand tracking accuracy has improved significantly in the last two years, and mixed-reality passthrough is opening up interaction patterns that didn’t exist before. What VR is today is not what it’s going to be in a year, and that is a good news for designers moving into this space. It’s an opportunity to invent new interactions instead of just following tried and tired best practices.

The is an opinion piece based on the author’s POV and does not necessarily reflect the views of HackerNoon.

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Il tuo utente è blindfolded e swinging un golf club: progettare per VR

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