door handles

SuperfastMatt looks at how the Tesla Model S retracting door handles were redesigned over time, from many parts to a motor plus sensor, with a focus on engineering and reliability.

Vox's Joe Posner, with help from 99% Invisible, explains why bad doors are everywhere. It covers Don Norman's long-running complaint about doors and the idea that good design should not need instructions.

A short clip from the 2013 LinuxCon Linux Kernel Panel in which Linus Torvalds is asked about being approached to insert a backdoor into Linux. He answers no verbally while nodding yes, which became a much-shared moment.

A short demo shows how to use the Tesla Model 3's mechanical emergency door release on the front doors as a backup to the electronic release. It notes an on-screen warning that frequent use could damage the door seals.

Christopher Domas presents research at DEF CON 26 showing a hidden alternate instruction set and undocumented hardware backdoor in some x86 processors, found on a third-party CPU. He uses it to ask how feasible wider hardware backdoors are.

Deviant Ollam shows that most physical attacks on doors bypass the lock, with photo and video examples of how doors, frames and hardware get defeated. It is a physical security talk from Shakacon.

Matt Risinger demonstrates a blower door test on a house, using a fan to measure air leakage and find where air gets in and out. It shows how the test reveals the quality of the build.

Christopher Domas's Black Hat talk demonstrates a hardware backdoor in a third-party x86 processor, a hidden core that grants root from userland. He uses it to discuss how feasible broader hardware backdoors might be.

Dr Mike Pound explains the suspected backdoor in the Dual_EC_DRBG random number generator and how elliptic curve constants could let someone predict its output.

A five-minute CGP Grey explainer arguing that a phone is effectively an extension of your mind, and that any backdoor or master key into encrypted devices will inevitably be abused or leaked. It frames the encryption debate as locks that are either unbreakable or absent.

Researcher Kamal Meattle describes how an arrangement of three common houseplants placed in specific spots can measurably clean the air in a home or office. It is a short TED talk based on his work in a plant-filled building.

Samy Kamkar demonstrates OpenSesame, a device that opens many fixed-code garage doors in seconds by exploiting a newly found attack, built around a Mattel toy. The video explains the attack and which brands are affected.

A two-minute clip from HBO's Silicon Valley season 2 in which Russ Hanneman shows off his gull-wing car doors. It is a comedic scene about startup excess.

Locksport historian Schuyler Towne's RVASec 2012 talk on why people lock their doors, tracing the history of locks and the assumptions about security behind them.

An SBS Dateline short documentary on Danish forest kindergartens, where children play freely outdoors, climb trees and use knives with little adult intervention.

Food YouTuber Adam Ragusea argues that gas stovetops are weaker than electric burners, dirty to clean, and a health risk from indoor air pollution. He cites Consumer Reports ratings and a literature review on gas stove health effects.

Veritasium tells the story of the XZ backdoor, how a patient attacker became maintainer and nearly compromised SSH on Linux systems. It also covers free software history and how encryption in SSH works.

Afroman's music video for a song about police damaging his door, built from home security footage of an officers' raid on his house.

People Make Games investigates the unregulated CS:GO skin gambling economy and Valve's role in it. It includes interviews with people who lost large sums and examines why Valve does not intervene.

Utah State plant scientist Bruce Bugbee presents his analysis of the energy and environmental costs of vertical and indoor farming. He argues artificial lighting cannot compete with sunlight in fields or greenhouses.

David Heinemeier Hansson explains what he learned about indoor air quality after his new house made his family sick. He covers CO2, VOCs, off-gassing, HVAC and ventilation, and cognitive effects, presented at a Basecamp meetup.

Technology Connections explains why humidity matters and compares the main types of humidifiers, including evaporative and ultrasonic designs. It covers how and why you would add moisture to indoor air.

Dr. Bruce Bugbee walks through the calculations for crop yield potential when light is the limiting factor, from photosynthetic quantum yield through respiration efficiency and harvest index, using the Energy Cascade Model.

Tom Scott features Kurtis Baute inside a sealed homemade biodome as carbon dioxide builds up, showing how stale air with elevated CO2 affects cognitive function. Sources include studies on CO2 and cognitive scores.

A short video explaining the Intel Management Engine, a hidden embedded computer inside Intel machines with deep access to hardware. It is presented from an insider's perspective and raises backdoor and NSA concerns.

Valve News Network goes through over twenty accounts from ex-Valve employees, mostly from Glassdoor, about what it is like to work at Valve. It covers the company's flat structure and culture.

A through-the-lens comparison of the Oculus Quest 2, HP Reverb G2 and Valve Index, capturing what each headset's display actually looks like. It also previews a 90Hz mode coming to Quest 2.

Deviant Ollam, head of a physical penetration testing team, presents tactics for getting into buildings, from bypassing door levers with a wire to defeating bank doors. He argues that physical security is often surprisingly weak.

A 2016 House Judiciary Committee hearing on encryption, held during the Apple and FBI iPhone dispute. It features testimony from Apple, the FBI and outside experts including Susan Landau, and runs over five hours.

This Old House's Ross Trethewey explains MERV filter ratings and how air filtration works, then shows how to build a localized DIY air filter, including a box fan with multiple filters.

Tiffany Fong's phone interview with Sam Bankman-Fried shortly after FTX filed for bankruptcy. He discusses the alleged backdoor, FTT collateral, political donations, and his legal position.

A beginner-focused tutorial on freehand knife sharpening with a single stone, aiming for a shaving-sharp edge in about five minutes.

A one-minute clip of the Warcraft II sound card test in setup, where the test sample plays and the voice says the sound card works perfectly.

James D'Angelo argues that the 1970 Legislative Reorganization Act made congressional votes public, opening the door to lobbyists and special interests. He proposes restoring secret voting as a cheap fix for corruption and many social ills.

Casey Muratori shows how fast a terminal renderer can run, building a simple reference renderer that handles Unicode and colored text far quicker than Windows Terminal. He argues that common excuses for slow terminals do not hold up.

Tom Scott explains for Computerphile how Unicode and UTF-8 grew out of messy older character encodings to become the web's standard. It covers why the design works and how it handles worldwide text.

Tech Ingredients shows how to make a homemade radiative cooling paint, with a custom liquid panel that cools below ambient temperature outdoors. The video covers the materials and how to apply the paint.

Pannenkoek explains how Super Mario 64 handles wall, floor and ceiling collisions, including triangles, normal vectors, quarter steps and out of bounds. It is a detailed 37-minute technical walkthrough of the game's physics.

A DEF CON 21 talk by Adam Laurie and Zac Franken on decapping chips, covering how to remove chip packaging and image the die to read out contents such as ROM.

Breaking Taps explains how the cryogenic mirror actuators on the James Webb Space Telescope achieve nanometer precision using flexures. It shows a 3D-printed replica and how one motor handles both coarse and fine motion.