Callsign logo — Pioneering digital trust through proprietary technology that...

Callsign

Pioneering digital trust through proprietary technology that uniquely mimics the way humans identify each other.

Founded 2011 United Kingdom London, United Kingdom 236 employees Venture round Total: $38.75M AI, Analytics +5

General Information

Company Name Callsign
Founded Year 2011
Location United Kingdom London, United Kingdom
Employees 236
Industries AI, Analytics, Big Data +4
Funding Stage Venture round
Social

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About Callsign

Callsign, founded in 2011 and headquartered in the United Kingdom, is at the forefront of digital trust innovation. Their proprietary technology promises to transform identity verification by mimicking human identification techniques, a unique value proposition especially relevant in today's digital landscape.

The company's technology is designed to positively identify genuine users with a staggering 99.999% accuracy. This high-fidelity AI-based solution offers minimal friction while ensuring the highest level of privacy and security, aligning with the growing demand for robust cybersecurity measures within the AI, Analytics, Big Data, Cyber Security, Fintech, and Machine Learning industries.

Callsign's last recorded investment was a Venture Round from HSBC Ventures on April 27, 2021. For investors, Callsign presents a compelling case with its innovative approach to digital trust, a critical component in today’s digital economy.

Business keywords: Digital Trust, Proprietary Technology, User Recognition, Authentication, Cyber Security, Identity & Access Management, Biometric Authentication, Fraud Prevention, PSD2, Account Takeover Prevention

Services & Products

Passive Authentication
Orchestration Layer
Authentication Suite
Ensembling Methods

Target Customers

Financial Institutions Retail Banks Online Payment Platforms Digital Service Providers

Funding Rounds & Investors (6)

View All
Funding Stage Amount Investors Lead Investors Date
Venture Round Undisclosed 1
HSBC Ventures
27 Apr 2021
Venture Round Undisclosed 1
JP Morgan
04 Feb 2020
Series A $35.00M 7
NightDragon, PTB Ventures +5
12 Mar 2018
Seed Round Undisclosed 1
Breed Reply
11 Oct 2016
Angel Round $3.50M 1
Terry Eger
01 Jun 2014
Seed Round $250.00K -
01 Apr 2013

Callsign Alternatives & Competitors

View All Alternatives
Callsign vs
Saffe
Saffe United Kingdom

Fraud prevention with AI, privacy & convince. NIST top performer facial biometrics & liveness detect...

Seed
8 employees
AI, Analytics
Callsign vs

Now Ping Identity. Simple, secure, private biometric authentication. ➡️ Follow us at Ping Identity

Select
41 employees
Analytics, Cyber Security
Callsign vs
TypingDNA
TypingDNA United States

AI based Authentication and Fraud detection.

Series A
150 employees
AI, API

FAQ About Callsign

Pioneering digital trust through proprietary technology that uniquely mimics the way humans identify each other.
Callsign was founded in 2011.
Callsign is headquartered in London, United Kingdom.
Callsign operates in AI, Analytics, Big Data, Cyber Security, Fintech, Privacy and Security and Machine Learning. Its work centres on Digital Trust, Proprietary Technology, User Recognition and Authentication. Its customers include Financial Institutions, Retail Banks and Online Payment Platforms.
Callsign has approximately 236 employees.
Callsign has completed 6 funding rounds, raising a total of $38.75M. The latest funding stage is Venture round.
Callsign offers: Passive Authentication, Orchestration Layer, Authentication Suite, Ensembling Methods.
Top alternatives and competitors to Callsign include Saffe, Keyless (part of Ping Identity), TypingDNA, MIRACL | The login you love, Ravelin Technology. These companies operate in related industries and serve comparable markets. You can compare them side by side on Bounce Watch.
Callsign and Saffe are both companies in similar industries. Compare their funding, team size, growth signals, and market position on Bounce Watch to see which one fits your needs.

Source: BounceWatch company record for Callsign, https://bouncewatch.com/company/callsign, updated 10 November 2025. When citing, please name BounceWatch and link this page.

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