Telesign Verification
Risk-based authentication software
Identity management software
Phone verification software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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Pay-as-you-go
Free Trial
Free version unavailable
Small
Medium
Large
- Energy and utilities
- Healthcare and life sciences
- Transportation and logistics
What is Telesign Verification
Telesign Verification is a phone-based identity verification service that helps organizations confirm user phone numbers and assess risk during account creation, login, and high-risk transactions. It provides SMS and voice one-time passcodes (OTP) and phone intelligence signals (for example, number type and reachability) via APIs and workflow tools. Typical users include digital businesses that need to reduce fake accounts, account takeover, and fraud while maintaining user onboarding and authentication flows. The product differentiates through its focus on telecom-derived phone number intelligence combined with verification delivery options.
Multiple verification delivery channels
The product supports common phone verification methods such as SMS OTP and voice calls, which helps teams design fallback paths when one channel fails. This is useful for global user bases where SMS deliverability varies by carrier and country. API-based delivery also fits into custom registration and step-up authentication flows. These capabilities align with phone-centric verification use cases rather than full customer identity suites.
Phone intelligence risk signals
Telesign Verification includes phone number intelligence attributes that can be used to score risk and tune authentication requirements. Examples typically include line type (mobile/landline/VoIP), reachability, and other number-related indicators that help detect suspicious sign-ups. This supports risk-based decisions such as when to require OTP, block, or route to additional checks. It provides a practical middle layer between basic OTP and broader fraud platforms.
API-first integration model
The service is commonly implemented through APIs, enabling engineering teams to embed verification into web and mobile applications. This approach supports automation, event-driven workflows, and integration with existing identity stacks. It also allows teams to centralize verification logic across multiple products or regions. For organizations that already have authentication in place, it can be adopted as an incremental control.
Phone number as weak identifier
Phone verification can confirm control of a number but does not prove the real-world identity of the person using it. Numbers can be recycled, shared, or obtained through VoIP providers, which can reduce assurance for some risk profiles. As a result, many organizations still need additional signals or identity proofing for higher-value actions. This limitation is inherent to phone-centric verification approaches.
SMS/voice deliverability dependencies
OTP delivery depends on carrier routing, local regulations, and device conditions, which can lead to delays or non-delivery in some geographies. These issues can increase support load and user friction during onboarding or login. Teams often need monitoring, retries, and channel fallback logic to maintain completion rates. Costs can also vary materially by destination and channel.
Not a full IAM platform
The product focuses on verification and phone intelligence rather than providing end-to-end identity and access management features such as directory services, SSO, adaptive access policies across apps, or full CIAM lifecycle management. Organizations looking for a single platform for authentication, authorization, and user management may need additional systems. Integration work is typically required to connect verification outcomes to broader identity policies. This can increase implementation complexity in mature IAM environments.
Plan & Pricing
Pricing model: Pay-as-you-go (usage-based) Free tier/trial: Free trial accounts available (see details below) Details / Notes:
- Telesign states Verify (Verification) pricing is pay-as-you-go with no contracts, no monthly fees; pricing varies by verification method (SMS Verify, Voice Verify, Silent Verification, Push Verify, Verify Plus, etc.) and by country. Official pricing page requires selecting method/country or contacting sales; per-transaction public rates are not shown on the generic pricing page. Volume discounts and committed-use pricing are available (contact sales).
- Free trial / evaluation options (official): Trial accounts provide an API key and complimentary test credits (e.g., the SMS Verify trial page advertises a $5 test credit and that the trial “never expires”). The Product Evaluation offering provides up to 500 evaluation transactions per service for specified products. Example (official) evaluation overage fees (from Telesign Product Evaluation Terms & Conditions):
- SMS Verify, SMS, Voice Verify, PhoneID Standard, Score — $0.10 per transaction (fees in excess of maximum evaluation transactions)
- PhoneID Add-ons — $0.10 per add-on (fees in excess of maximum evaluation transactions)
- Voice API — $1.25 per transaction (fees in excess of maximum evaluation transactions)
- WhatsApp — listed as $86.5 (with $0.10 + passthrough fee in another column) in the evaluation T&C table (evaluation-specific fees) Discount options: Volume/committed-use discounts; contact sales for tailored pricing.
Seller details
Telesign Corporation
Marina del Rey, California, USA
2005
Private
https://www.telesign.com/
https://x.com/telesign
https://www.linkedin.com/company/telesign/
