Show HN: Real-time privacy protection for smart glasses https://ift.tt/Ex12jqU

Show HN: Real-time privacy protection for smart glasses I built a live video privacy filter that helps smart glasses app developers handle privacy automatically. How it works: You can replace a raw camera feed with the filtered stream in your app. The filter processes a live video stream, applies privacy protections, and outputs a privacy-compliant stream in real time. You can use this processed stream for AI apps, social apps, or anything else. Features: Currently, the filter blurs all faces except those who have given consent. Consent can be granted verbally by saying something like "I consent to be captured" to the camera. I'll be adding more features, such as detecting and redacting other private information, speech anonymization, and automatic video shut-off in certain locations or situations. Why I built it: While developing an always-on AI assistant/memory for glasses, I realized privacy concerns would be a critical problem, for both bystanders and the wearer. Addressing this involves complex issues like GDPR, CCPA, data deletion requests, and consent management, so I built this privacy layer first for myself and other developers. Reference app: There's a sample app (./examples/rewind/) that uses the filter. The demo video is in the README, please check it out! The app shows the current camera stream and past recordings, both privacy-protected, and will include AI features using the recordings. Tech: Runs offline on a laptop. Built with FFmpeg (stream decode/encode), OpenCV (face recognition/blurring), Faster Whisper (voice transcription), and Phi-3.1 Mini (LLM for transcription analysis). I'd love feedback and ideas for tackling the privacy challenges in wearable camera apps! https://ift.tt/fZz0w6U August 12, 2025 at 01:10AM

Show HN: Mock Interviews for Software Engineers https://ift.tt/OoIelBY

Show HN: Mock Interviews for Software Engineers https://ift.tt/hr759Yl August 14, 2025 at 04:32AM

Show HN: Emailcore – write chiptune in plain text in the browser https://ift.tt/8jZWpyE

Show HN: Emailcore – write chiptune in plain text in the browser I tried using the AudioContext API to make the most primitive browser-based multi-voice chiptune tracker conceivable. No frameworks or external dependencies were used, and the page source ought to be very readable. Songs are written in plain, 7-bit safe text. Every line makes a voice/channel. The examples given on the page should hopefully illustrate every feature, but as a quick overview: Sounds are specified using Anglo-style note names, with flat (black) keys being the lowercase version of the white key above so as to maintain one character per note. Hence, a full chromatic scale is AbBCdDeEFgGa. Every note name is interpreted as the closest instance of that note to the preceding one. +- skips up or down an octave, ~ holds the previous note for a beat, . skips a beat, 01234 chooses one of 5 preset timbres, <> makes beats slower or faster (for all channels), () makes the current channel louder or quieter. All other characters are ignored. If you come up with a good tune, please share it in the comments! https://ift.tt/Tw50Vz2 August 14, 2025 at 03:23AM

Show HN: Nocturne – Your Car Thing's Second Chapter https://ift.tt/Xf2ojAy

Show HN: Nocturne – Your Car Thing's Second Chapter Hello HN! Recently, we have released Nocturne 3.0.0, which is a complete replacement for the (now unusable) Spotify Car Thing stock firmware. We're proud to eliminate more e-waste in the world. # Changes from v2 - Bluetooth tethering for car use (no more Raspberry Pi in the car) - Full graphics acceleration - Native Spotify login (no more client ID/secret) - Start DJ from the Car Thing - Podcast support - Gesture control - New settings - Boot to Now Playing - Spotify Connect device switcher - Support for Japanese, Simplified Chinese, Traditional Chinese, Korean, Arabic, Devanagari, Hebrew, Bengali, Tamil, Thai, Cyrillic, Vietnamese, and Greek - Full knob control support - Local file support - Preset button support - Status bar on home (shows time & Bluetooth/Wi-Fi) - Auto brightness - Hold settings button for power menu - Lock screen showing time full screen (press settings button) - DJ preset binding (hold preset button while DJ is playing in Now Playing) - Spotify mixes in Radio tab (Discover Weekly, daily mixes, etc.) - OTA updates - + MUCH more (this is just the important stuff!) # Flashing A guide to flashing Nocturne 3.0.0 is in the README. Bluetooth will work out of the box, or choose an alternative in the Setting up Network section. Hotspot capability from your phone and plan are required for Bluetooth. # Notes This wouldn’t be possible without our donors and the rest of the Nocturne Team. We hope you’ll enjoy it, as we've spent thousands of hours working on it! Consider buying the team a coffee if you can https://ift.tt/ePOBhSC https://ift.tt/FGYQc5P https://usenocturne.com August 12, 2025 at 10:53PM

Show HN: I accidentally built a startup idea validation tool https://ift.tt/DUfK8aN

Show HN: I accidentally built a startup idea validation tool I was working on validating some of my own project ideas. While trying to find how to validate my idea, I realized the process itself could be turned into a tool. A few late nights later, I had something that takes any startup idea, fetches discussions, summarizes sentiment, and gives a quick “validation score.” It’s very rough, but it works, and it’s already making me rethink a few of my own ideas. It's still a work in progress. I don't actually know what I'm doing, but I know it's worth it. Honest feedback welcomed! Live demo here: https://validationly.com/ https://validationly.com/ August 13, 2025 at 01:59AM

Show HN: Minimal Claude-Powered Bookmark Manager https://ift.tt/5bGlYvS

Show HN: Minimal Claude-Powered Bookmark Manager https://tryeyeball.com/ August 12, 2025 at 11:34PM

Show HN: I built LMArena for Motion Graphics https://ift.tt/Hseulwa

Show HN: I built LMArena for Motion Graphics A motion-graphic comparison website in the vein of LMArena. The videos are rendered via Remotion. We hope that AI will be used in interesting ways to help with video production, so we wanted to give some of the models available today a shot at some basic graphics. https://ift.tt/PrykUBM August 12, 2025 at 11:04PM