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A system for artificially dissipating fog, in which gasoline or other fuel is burned at intervals along an airstrip to be cleared. Derived from fog investigation dispersal operations.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


FInite DOmains. A constraint language implemented on top of Prolog.
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(1) For email, see FidoNet.

(2) (Fast IDentity Online) A technology from the FIDO Alliance that authenticates a user logging into an online service. In 2014, the Alliance introduced biometric and two-factor authentication methods.

Client and Server Interaction
When a user opens an account with an online service, the FIDO client in the user's app or browser registers with the FIDO counterpart in the provider's server. The FIDO client is used to select the authentication method (biometric or second factor), enroll the user and generate a private/public key pair. It keeps the private key in the user's device and sends the public key to the FIDO server. See public key cryptography.

When logging in, the FIDO client performs the biometric or second factor verification and then receives a challenge from the server. The client digitally signs the challenge, which the server verifies using the public key stored in the user's account. See digital signature.

FIDO UAF (Universal Authentication Framework)
The UAF is the biometric authentication protocol used by the FIDO client.

FIDO U2F (Universal Second Factor)
The U2F supports a second authentication device such as a USB security key or PIN. See two-factor authentication.

FIDO2 is the latest generation. FIDO2 uses the W3C's Web Authentication specification (WebAuthn), built into major browsers such as Chrome and Edge, and FIDO's client-to-authentication protocol (CTAP), which enables smartphones and USB security keys to work as FIDO authenticators.

A FIDO-Certified USB Key
This YubiKey FIPS is certified for FIDO second-factor authentication, and it meets federal standards (see FIPS 140-2). (Image courtesy of Yubico,
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References in periodicals archive ?
The meeting was presided over by Senator Fida Muhammad.
Les stars presenteront les resultats finaux lors d'une conference du FIDA en fevrier 2020, rappelant aux dirigeants gouvernementaux la necessite d'accroitre les investissements dans l'agriculture, ainsi que le developpement a long terme et la formation des jeunes en milieu rural.
During one outing, Klesges recalled another dog trying to attack him and Fida sprang into action to protect him.
Mulei faulted Fida for its line of argument in seeking to join the matter saying the case against the DCJ is not based on the fact that she is a woman and therefore the lobby cannot come to court claiming discrimination against the judge on the basis of her gender.
I didn't allow them to leave the house; they were so depressed at home," Fida recalls.
At the press conference jointly addressed by the NISD Executive Director, Abiodun Oyeleye and FIDA Programme Officer, Blessing Ajileye, on Monday, contended that INEC improved in the conduct of the election compared to previous elections.
They said that the disease is fast spreading in the Sunyani Municipality, and expressed appreciation to FIDA Ghana for their support.
The high-speed Haramain rail route between Makkah and Madinah is projected to transport 60 million passengers per year,Mohammed Abdulhafiz Fida, director general of the project, has told the Saudi Gazette newspaper.
The Haramain Speed Train will be launched this year, Mohammed Abdulhafiz Fida was quoted as saying in a Saudi Gazette report, which cited Al-Jazirah Arabic.
The Festival was jointly inaugurated by the Provincial Minister for Tourism, Sports, Archaeology and Museums, Gilgit-Baltistan, Fida Khan Fida and the LCCI President Malik Tahir Javaid.