Building trust: Why age verification is essential for online marketplaces

The ecommerce landscape is evolving rapidly, with global retail e-commerce sales projected to exceed $4.1 trillion in 2024. However, this growth has also attracted fraudsters, making robust security measures, like age verification, more critical than ever. According to Veriff’s Future of eCommerce report, fraud in ecommerce is on the rise, with a 21% increase in fraudulent activities between 2024 and 2025. Alarmingly, 1 in 20 verification attempts in 2024 involved someone pretending to be someone else.

Recent regulatory developments and research underline how significant this risk has become. For example, the UK’s Online Safety Act now requires platforms hosting age-restricted content to implement “highly effective” age assurance measures, with regulators able to impose substantial penalties for non-compliance and even block services that fail to protect minors. Research from Ofcom also demonstrates the scale of the problem:8% of children aged 8–14 accessed online pornography within a single month, highlighting how easily minors can bypass weak or self-declared age checks. At the same time, surveys show strong public demand for stronger protections, witharound 80% of adults supporting age-assurance mechanisms online.

These findings illustrate that robust age verification is not only a regulatory requirement but also a critical safeguard for platform integrity, helping marketplaces demonstrate compliance, reduce risk exposure, and maintain the trust of users, partners, and regulators alike.

Here, we explain why age verification for marketplaces is a strategic necessity, outline the operational and regulatory risks of failing to verify age, and describe practical, scalable approaches marketplaces can take to implement age checks while minimizing friction. All guidance and data are drawn from marketplace-focused verification guidance and product capabilities intended for platforms that must balance growth with safety and compliance.

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The strategic imperative: compliance, safety, and marketplace liquidity

Marketplaces operate on a fragile balance of supply and demand, where trust drives liquidity. When platforms cannot prove users meet legal age requirements for restricted goods or services, they face three immediate risks: regulatory exposure, safety failures that damage brand equity, and lost revenue from access limitations to high-margin categories. Age verification for marketplaces reduces these risks by embedding age-assurance into onboarding and critical lifecycle moments, allowing platforms to enter or expand into regulated markets with confidence.

However, the challenge is clear. Studies show that weak verification mechanisms remain common across digital commerce: 61% of e-commerce businesses still rely on simple self-certification methods such as tick boxes or date-of-birth entry, which can easily be falsified by underage users. Meanwhile, research indicates that over 30% of online businesses selling age-restricted products have faced fines or legal action due to inadequate age checks, underscoring the real financial and compliance consequences for platforms operating without robust controls.

Additionally, regulations and local nuances vary by market, and marketplaces must meet region-specific requirements – from in-person delivery checks to document-based validation. Embedding age checks into a single, adaptive verification workflow helps platforms maintain audit trails, meet local mandates, and scale globally while preserving the sign-up experience for legitimate users.

Core risks of not verifying age

When marketplaces omit reliable age checks, they expose themselves to a spectrum of harms that can directly undermine growth and profitability. These include:

• Regulatory and legal exposure: Non-compliance with mandatory age checks can lead to fines, enforcement actions, and restrictions that hinder expansion.
• Safety incidents and reputational harm: Underage access to restricted goods creates immediate safety risk and damages public trust, reducing repeat usage and platform engagement.
• Fraud and liability: Lack of robust age assurance increases the platform’s vulnerability to fraud rings, misrepresentation, and chargebacks tied to unauthorized purchases.
• Operational disruption: Reactive, manual age checks inflate review workloads, delay fulfilment, and slow time-to-first revenue for sellers and providers.

These risks compound as marketplaces scale across geographies and product categories. A single safety or regulatory incident can trigger significant legal costs and long-term trust erosion, reducing liquidity and growth potential.

Designing adaptive age-verification workflows

Marketplaces succeed when verification is both effective and unobtrusive. Verifiable age checks should be embedded into adaptive workflows that consider user type, geography, device signals, transaction risk, and local rules. Key design principles include:

• Risk-based escalation: Trigger stronger ID-based validation for high-risk purchases or flagged users while using lighter age estimation for routine, low-risk interactions.
• Localization: Tailor checks to local regulatory frameworks and document formats – supporting regional document types and language coverage to avoid false declines.
• Minimal friction: Apply the least intrusive method that meets compliance needs to protect conversion – for example, using ID Scan at checkout or age estimation for low-value items.
• Auditability and policy alignment: Maintain clear logs and decision records to support audits and regulatory reporting.
• Fallbacks and manual review: Provide human review pathways for complex or ambiguous cases where automated checks are insufficient or consent for automation is not granted.

These design choices let marketplaces preserve conversion and liquidity while meeting regulatory obligations and reducing operational burden.

Operational considerations: continuous assurance and fraud defense

Age verification is not a one-time task. Marketplaces should include age assurance within a broader lifecycle strategy – combining onboarding checks with continuous authentication and fraud signals. Continuous measures such as re-verification at key lifecycle moments, profile image capture to reduce ghost accounts, and device/network signals to detect injection attacks help maintain age and identity integrity over time.

Platforms that only verify once risk account sharing, impersonation, and synthetic identities – issues that are particularly acute in marketplace verticals. Continuous assurance keeps verified users genuine and platform-safe, protecting both providers and consumers across the lifecycle.

Practical roadmap for implementation

Marketplaces can adopt a staged approach to implement age verification at scale:

1. Define risk zones: Map which products, user journeys, and geographies require strict age validation versus lighter estimation.

2. Choose methods: Select a mix of age validation, ID Scan, and age estimation appropriate to each risk zone; plan for point-of-delivery checks where required.

3. Build adaptive workflows: Implement configurable logic to route users through the appropriate verification path automatically.

4. Operationalize manual review: Establish human fallback for edge cases and regulatory exceptions to keep conversion high while meeting compliance obligations.

5. Monitor and iterate: Track declines, verification completion rates, and false positives; adjust routing and thresholds to optimize conversion and compliance.

This phased approach balances speed to market with the need for rigorous compliance controls and user experience optimization.

Marketplace examples and use cases

Different marketplace verticals have distinct trigger points for age verification:

• eCommerce marketplaces: Age checks typically occur at checkout for restricted goods; platforms may use ID Scan or age validation to prevent liability and meet region-specific rules.
• Mobility and delivery: Age verification at point of delivery ensures compliance for regulated deliveries and reduces operational risk for drivers and couriers.
• Dating and communities: Age assurance protects minors from accessing adult content and builds trust within the community; stateless, privacy-preserving checks can be used for privacy-focused platforms.

Measuring success and business outcomes

Age verification programs should be evaluated against both safety and commercial metrics. Key outcomes include reduced regulatory incidents, fewer safety reports tied to underage access, lower fraud and chargeback rates for restricted categories, and preserved conversion rates through optimized verification flows. Operational metrics – such as manual review volume, verification completion rates, and time-to-activation for providers – help teams balance compliance and growth. Some 31% of consumers say they have switched companies due to fraud or security concerns, highlighting how effective identity and verification controls directly influence retention and conversion.

Over time, embedding age assurance into an adaptive identity platform converts trust from a cost center into a growth enabler, by enabling access to higher-margin, age-restricted markets without undue friction.

How Veriff delivers seamless Age Verification

Modern customers expect a fast, frictionless checkout experience. Any disruption can lead to cart abandonment. This is why a cumbersome age verification process is not an option. Veriff’s solution is designed to integrate seamlessly into your existing user journey, making age checks quick, accurate, and unobtrusive.

Our AI-powered technology works in the background, minimizing friction and keeping the user experience smooth. By using state-of-the-art systems, we can accurately verify a user’s age in seconds, ensuring that legitimate, age-appropriate customers can complete their purchases without unnecessary delays.

Even the most accurate age estimation system must verify that it’s analyzing a real, live person. Without liveness detection, systems are vulnerable to two major attack types:

• Presentation attacks: When users attempt to pass verification with static photos, videos, or masks.
• Injection attacks: When pre-recorded or digitally fabricated imagery is fed directly into the system.

Veriff combats these threats through integrated passive liveness detection, which operates invisibly to the user while confirming physical presence. This prevents spoofing with photos, deepfakes, or synthetic identities, ensuring every estimation is authentic, secure, and fraud-resistant.

By merging Age Estimation with liveness detection, Veriff delivers a seamless, low-friction, and tamper-proof verification process—ideal for protecting minors and maintaining regulatory compliance.

Advanced solutions for modern marketplaces

Veriff offers a suite of products designed to meet the diverse needs of online platforms:

• Age Estimation: This privacy-preserving method uses advanced facial analysis from a simple selfie to estimate a user’s age. It’s a quick, document-free way to ensure users meet a minimum age threshold without collecting sensitive personal data.
• Age Validation: For a more definitive check, our system can extract the date of birth from thousands of government-issued IDs from around the world and check against the threshold set. It automatically calculates the user’s age and can decline anyone who falls below your predefined minimum age requirement.

Best practices summary

Adaptive age verification workflows help marketplaces strike the right balance between seamless user experience and strong trust and safety. By using risk-based, localized approaches, ranging from simple age estimation to full ID verification. Platforms can minimize friction while staying compliant across regions. Applying verification throughout the user lifecycle, not just at sign-up, ensures ongoing protection, while built-in fallbacks and audit-ready processes keep operations resilient and transparent. The result is higher conversion, stronger protection, and sustainable, trust-driven growth.

Secure your marketplace with Veriff

In the competitive world of e-commerce, trust is your most valuable asset. Integrating a reliable and user-friendly age verification solution is a critical step in building and maintaining that trust. It demonstrates your commitment to safety, protects your business from legal risks, and provides a secure environment for all your users.

Veriff provides the advanced tools you need to comply with regulations, prevent fraud, and offer a seamless experience for your age-appropriate customers. By automating age checks, you can safeguard your platform, protect minors, and solidify your reputation as a leading online marketplace.