wireless

Disney Research's demo of quasistatic cavity resonance, which uses a purpose-built room or cabinet to generate magnetic fields that deliver kilowatts of power wirelessly to mobile receivers inside.

Dave Jones of EEVblog debunks the uBeam ultrasonic wireless phone charging technology and explains why it is not practical. He covers efficiency, coupling loss and safety, and responds to the founder's remarks about engineers.

A two-minute 2011 clip of an early uBeam wireless power demo. It shows a short-range ultrasound charging demonstration.

A TEDxNashville talk by uBeam founder Meredith Perry about becoming a technology innovator and her plan for wireless charging of phones.

A short University of Washington demo of ambient backscatter, where battery-free devices communicate by reflecting existing wireless signals. It shows devices powered and linked by ambient RF.

A short Conan on TBS segment mocking Apple's new wireless AirPods and the removal of the iPhone 7 headphone jack, in the form of a parody ad.

Apple security head Ivan Krstic gives a Black Hat 2016 talk on iOS security, covering HomeKit, Auto Unlock and iCloud Keychain. He explains key hierarchies and how data can stay safe even in adversarial clouds.

Technology Connections takes apart a 1940s Sunbeam Radiant Control toaster. It senses the toast's own browning and lowers and raises it automatically using purely mechanical parts and no electronics.

Microsoft's Tony Chen explains how the Xbox One was designed to resist physical attacks, including secure boot, encrypted memory, a security processor and a hypervisor. The goal was to make any hardware attack cost more than the price of many games.

AvE tears down the Juicero cold-press juicer, examining its heavily machined parts, electronics and the pricey juice packs. He pokes fun at the product and venture-funded culture along the way.

Techmoan's 45-minute retrospective on Sony's MiniDisc, covering the first and last machines, ATRAC, MD-LP, Net-MD and HiMD. It argues the format deserves more credit than its US failure narrative suggests.

Matt Adereth's Clojure/conj talk covers the history of keyboards and how he used Clojure generating OpenSCAD to design and build his custom Dactyl ergonomic keyboard, including 3D printing and laser-cut parts.

Technology Connections gives first impressions of using an Onyx Boox Max2 e-ink tablet for productivity, including using it as an external display. He shows what the device can and cannot do.

Techmoan's beginner introduction to the compact cassette, testing metal tapes and Dolby S noise reduction on a Sony TC-S1 deck. He checks whether a cassette can sound close to a CD when good tape and equipment are used.

The full 80-minute Macworld 2007 keynote in which Steve Jobs introduced the original iPhone. It includes the multitouch demos, visual voicemail and scrolling.

Ben Krasnow of Applied Science explains how electrophoretic e-paper displays work and how he modified the driver firmware and waveform lookup tables of a 4.2-inch panel to reach roughly 3Hz partial refresh. It covers the tweakable constants in the refresh process and touches on colored e-ink microcapsules.

Technology Connections explains why single-hose portable air conditioners are inefficient and often a poor choice compared with window units. It details how the single hose pulls in warm outside air and wastes energy.

Techmoan demonstrates the Tefifon, a vintage German audio player that combines elements of record and tape with a grooved elastic loop. He shows how it works and plays it.

Technology Connections experiments with filtering white and colored LEDs to make holiday lights look less garish. He explains why narrowband LED strings look harsh compared with incandescent bulbs.

A Technology Connections update video in which Alec Watson tests an Onyx Boox Max e-ink Android tablet used as an external display and shares channel news. It describes his experience with large-format e-ink.

Linus Tech Tips reviews the Looking Glass 8K holographic display, a glasses-free 3D monitor. The video shows the display in action and explains how it works.

Technology Connections shows a cheap method for capturing analog video: a composite-to-HDMI upscaler feeding an HDMI capture dongle, aimed at digitizing home movies and VHS tapes.

Tom Scott explains how he built his emoji keyboard, which turned out to be a series of bodged-together tools including AutoHotkey and LuaMacros. He tells stories about the value of quick-and-dirty solutions.

Scotty Allen of Strange Parts travels through Shenzhen's Huaqiangbei markets and learns to upgrade an iPhone 6s from 16GB to 128GB by swapping its flash chip. It is part 3 of his custom iPhone series and shows the difficulty of the hands-on repair work.

A Microsoft Research demo from TechFest 2012 of a lab touch system that lets viewers feel the effect of different input latencies, down to about 1 ms. It shows how much more responsive dragging feels compared with typical 100 ms touch delay.

David Sachs of InvenSense explains how gyroscopes, accelerometers and compasses work on their own and together, demonstrated on a modified Android handset. He covers sensor fusion algorithms and why rotation math such as Euler angles matters.

An excerpt from Steve Jobs's January 2007 Macworld keynote in which he introduces the original iPhone. It shows the pitch of a phone, music player and internet communicator, along with the live demo.

A demo of the 8pen, a gesture-based keyboard replacement for touchscreens that lets users enter text by moving around a circle. It is meant for phones, remotes and game controllers and mimics handwriting.

Louis Rossmann, an independent Apple repair shop owner, explains why he does not use Apple products, drawing on his experience of repairing devices he considers designed to fail and hard to fix.

Bloomberg's Hello World episode in which Ashlee Vance visits Shenzhen, a hub of electronics manufacturing and cloning. He meets tech-fueled entrepreneurs working under an authoritarian regime.

The official trailer for the documentary General Magic, about the secretive Apple spinoff that tried to build a handheld communicator in 1990 and whose ideas shaped the smartphone era.

The full January 2007 Macworld keynote where Steve Jobs unveils the first iPhone. It covers the touch interface, multitouch gestures, the browser, maps and the pitch as an iPod, phone and internet communicator.

Louis Rossmann discusses failing keyboards on newer MacBooks, comparing a Dell keyboard repair with an Apple keyboard repair and explaining why Apple's design is costly and hard to fix.

Corning's 2011 concept video showing a future where specialty glass surfaces and touchscreens are woven into everyday life.

Louis Rossmann, a Macbook repair shop owner, goes through a long list of Apple hardware engineering failures, from GPU defects to keyboards and repair practices.

Brad Fitzpatrick records himself struggling to silence a set of first-generation Nest Protect smoke alarms that keep beeping and triggering one another.

Hamish Coleman describes reverse engineering the keyboard controller in a Thinkpad and reflashing it with custom firmware. He covers how Lenovo secures its firmware, and his ongoing work on the protocol between the BIOS and the vendor flash tool.

Second half of a 2017 Computer History Museum live event in which former Apple software chief Scott Forstall is interviewed by John Markoff about creating the original iPhone. He tells stories about Steve Jobs and the team and the origins of the iPhone software.

Adam Savage's Tested spends a week with the Magic Leap One developer kit. They dig into the hardware, display technology, user experience and launch apps.

Strange Parts builds a working refurbished iPhone 6S entirely from components bought in the Huaqiangbei phone parts markets in Shenzhen. The video explains how the markets work and what the parts cost.