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Callsign

London, United Kingdom (UK) · Information Technology

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Verified by Enterprise League

Data quality

Complete · Accuracy

Last verified

Jul 2026

#Multi-factor Authentication (MFA)

#Cyber Security

#Realtime Identification

#Two-factor Authentication (2FA / TFA)

#Fraud and Security Prevention Plan

#PSD2

#Identity & Access Management (IAM)

#Identity Management (IdM)

#Account Takeover Prevention

#Strong Customer Authentication

Callsign is a Information Technology company based in London, United Kingdom (UK), founded in 2011, with 100-150 employees. Callsign's profile is verified on Enterprise League.

Overview

Callsign is pioneering digital trust through proprietary technology that uniquely mimics the way humans identify each other in the real world. Positive identification of genuine users delivers privacy, safety and minimal friction whilst ensuring that bad actors are blocked. Through a simple Swipe or Type, users can be personally recognized to a 99.999% accuracy, delivering the highest fidelity AI based user recognition for the digital world.
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Contact Details

info@callsign.com

London, United Kingdom (UK)

Founded

2011

Employees

100-150

Categories

Network Security
Computer Hardware
Cybersecurity

Keywords

#Multi-factor Authentication (MFA)

#Cyber Security

#Realtime Identification

#Two-factor Authentication (2FA / TFA)

#Fraud and Security Prevention Plan

#PSD2

#Identity & Access Management (IAM)

#Identity Management (IdM)

#Account Takeover Prevention

#Strong Customer Authentication

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