Accessibility & Sensory Tools

If the rest of this app is about managing documents and files, this chapter is about something more fundamental: putting your phone's camera, sensors, and accessibility hooks directly in service of your independence. Every tool here turns a piece of hardware you already carry — a lens, a light sensor, a magnetometer, a GPS chip — into something that speaks to you in plain language.

Talking Camera and Object Detection both use the rear camera, but for different purposes: one reads documents and frames photographs for you, the other names the things in front of the lens in real time. The Ambient Light Detector and Vibration Compass turn invisible physical properties — brightness and direction — into spoken numbers, audio tones, and vibration patterns you can feel through your fingertips. Focus Bridge is different again: it's a system-level accessibility service that can read and interact with the screen of almost any app on your phone, not just this one, filling in gaps where another app's own accessibility support falls short. Location Announcer speaks your surroundings on demand, Time & Battery Announcer keeps you informed in the background without you ever opening the app, and Screen Recorder captures your device's display when you need a record of what happened on screen.

Every one of these tools was built and tested against a screen reader from the start, which is a different discipline than adding accessibility labels to a sighted-first design afterward. Buttons announce what they do before you press them. Settings are grouped logically and explained in the moment, not buried in a manual. Where a feature runs entirely on-device — as several in this chapter do — you'll be told plainly, because knowing your data isn't leaving your phone matters.

Taken together, these are the tools that make Tech Assistant feel less like an app and more like a companion device: the ones you reach for not to manage a file, but to understand a room, a document, a direction, or a stretch of unfamiliar street. Work through them once with a bit of patience, and each one becomes a reflex.

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Talking Camera

Talking Camera turns your phone into a reading and recognition assistant: point it at a document and it can auto-detect and scan the page, or take a guided photo with face-detection framing for selfies. Scanned documents flow straight into the PDF reader so you can have them read aloud immediately. A one-time welcome walkthrough explains the controls the first time you open it, and you can skip it in settings afterward. This section covers launching the camera, capturing documents versus photos, and adjusting the shared reading voice.

Ambient Light Detector

This tool reads your device's light sensor and converts the brightness into a simple 0–100% scale, announced aloud with matching audio tones and vibration feedback. It can help you tell whether a room is lit, find the brightest spot nearby, or check if it's safe to turn off a light. A safety alarm and auto-flash option are also available. This section walks through each feedback mode and how to configure them.

How to use Tactile Compass? (Step-by-Step Guide)

A revolutionary step for visually impaired people - Accessible Tactile Compass

Focus Bridge (Screen Reader)

Focus Bridge is a built-in Android accessibility service that scans whatever is currently on your screen — in any app — and reads it aloud, complete with a floating trigger button and customizable two-finger swipe gestures. Because it works system-wide, it can complement or stand in for your regular screen reader in apps that are hard to navigate. Setup requires granting an overlay permission and turning on the accessibility shortcut, which the first-run walkthrough guides you through. This section explains enabling the service, customizing gestures, and editing labels for hard-to-read screen elements.

Location Announcer

Location Announcer uses GPS to figure out where you are and speaks your current address or place name, along with a list of notable places nearby. You can optionally add your own API key for Google Geocoding, Mapbox, or LocationIQ for more detailed results. This section covers granting location permission and choosing a geocoding provider.

Time & Battery Announcer

This tool periodically speaks the current time and your battery level in the background, even when the app isn't open, using a persistent notification to keep running reliably. You can set the announcement interval, choose 12- or 24-hour format, add a chime, and configure a quiet "bedtime" schedule plus low-battery and full-charge alerts. This section explains setting it up so it keeps running after a phone restart.

Screen Recorder

Screen Recorder captures everything happening on your device's display, with a countdown before recording starts and the ability to pause and resume mid-session. Finished recordings are saved to a library you can revisit and share later. This section covers starting a recording, managing the countdown, and finding your saved videos.

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