Awesome WebHID

Curated list of resources relating to the WebHID (Human Interface Device) API

WebHID is a browser API (navigator.hid) that provides access to HID input/output devices. It's a higher level of abstraction than the WebUSB and Web Bluetooth APIs, but lower than the Gamepad API and basic input (pointer/keyboard).

Contributions welcome. Add links through pull requests or create an issue to start a discussion. See contribution guidelines.

Contents

• Status
• Good to know
• Specification & documentation
• Blogs & articles
• Talks & videos
• Devices
• Tools
• Bluetooth, USB, & HID reference
• Demos, experiments & hacks
• Real-world applications
• Inspiration from elsewhere
• Ideas
• Forums & discussion
• Miscellaneous
• Related

Status

In development (Chromium) as of 29 March 2019:

• Target version 75 (branch point 18 April, estimated stable release 4 June).
• Release version 78 (branch point 5 September, estimated stable release 22 October).

Good to know

• WebHID is not a W3C Standard nor is it on the W3C Standards Track^(ref).
• Devices that generate trusted input (e.g. keyboards, mice, security keys) will not be accessible. Such devices define their reports in top-level HID collections that will be considered protected usages^{(ref1), (ref2)}.
• Access to a device must be granted by the user via a chooser dialog provided by the browser, similarly to WebUSB and Web Bluetooth. Launching the chooser must be done from the context of a user gesture (e.g. a mouse click).
• Neither the WebUSB^(ref) or Web Bluetooth^(ref) APIs allow access to HID-class devices.

Specification & documentation

• WebHID API Specification (Web Platform Incubator Community Group (WICG)) - Including introduction, motivating applications, and security/privacy.
• WebHID Explainer - The what & why in a nutshell, including basic terminology and an example. Some API details outdated.
• WebHID (Human Interface Device) - Chrome Platform Status
• Chromium implementation tracking bug: WebHID API - Labelled with targeted & stable release versions; see the development/release calendar.

Blogs & articles

None yet.

Talks & videos

None yet.

Devices

Devices that work well with WebHID, and device-specific abstraction libraries. Do also file an issue to inform others of devices that don't. Not all devices in the USB HID device class will communicate using the high-level abstractions.

Candidates

• Blink(1) - notification light (see node-blink1)
• BlinkStick - light devices and controllers (see blinkstick-node)
• Cleware - sensors, switches, and lights (see clewarecontrol, sniner/cleware)
• Espruino Pico board - has an USB HID mode, might also be useful as an emulator?
• Jabra headsets (see Standard USB HID Specification)
• Nintendo Switch Pro Controller^(ref)
• Sony DualShock 3 & 4^(ref)
• X-keys - keyboards, switches, analog controls, and pedals (see HID Data Reports, Integration, xkeys, node-xkeys)
• Xbox Wireless Controller^(ref)

Tools

Software that aids working with devices.

• USBDeview - View device information.
• USB Device Tree Viewer - View device information including interface and HID descriptors.
• node-hid - Cross-platform library for accessing USB HID devices from Node.js or Electron.

Bluetooth, USB, & HID reference

Information about the underlying technologies, including specifications and explanations.

• Human Interface Devices (HID) Information (USB Implementers Forum (USB-IF)) - Including the device class definition, and usage tables.
• Human Interface Device Profile specification (Bluetooth Special Interest Group (SIG)) - "An adaptation of the USB HID Specification to operate over a Bluetooth wireless link."
• A Closer Look at HID Class - Explanation of USB HID, with enough detail yet easy to follow.
• Understanding HID report descriptors - Understanding devices' descriptions of themselves.

Demos, experiments & hacks

None yet.

Real-world applications

None yet.

Inspiration from elsewhere

Transferrable inspiration from related areas such as general Bluetooth/USB HID, Web Bluetooth, and WebUSB.

• chrome.hid API sample - Generic input/output Chrome App sample.
• blink(1) using the chrome.hid API - Chrome App sample that controls a Blink(1) notification LED.
• Interacting with USB HID devices from web apps - Using a Chrome App as a go-between between a dictation foot pedal and a web application (2015).
• Web Bluetooth Demos (Web Bluetooth Community Group) - Various, plus links to others.
• Griffin Powermate Playground - Using WebUSB.
• node-hid examples - Despite the name, most directly use low-level read/write operations rather than HID abstractions.

Ideas

Great idea, no time or no device? File an issue to share.

• Device explorer tool - Web tool for conveniently viewing device info, monitoring input reports, and sending output/feature reports; something in the style of this one for Web Bluetooth.

Forums & discussion

• Human Interface Device (HID) API (WICG Discourse) - Introduction by the editor of the specification, and answers to questions.
• Intent to Implement: WebHID (Human Interface Device) (chromium.org blink-dev) - Introduction by the editor of the specification, and answers to questions.

Miscellaneous

None yet.

Related

• Web Bluetooth API (MDN)
• WebUSB API (MDN)
• chrome.hid API - For Chrome Apps.
• Web Serial API
  • Specification (WICG)
  • Discussion (WICG Discourse)
  • Chromium implementation tracking bug: Web Serial API

License