# O3.25 Ensure that biometric authentication is not mandatory

{% tabs %}
{% tab title="Principle" %}
[O3: Ensure data privacy by design](/safeguards/universal-dpi-safeguards-framework/principles/operational-principles/o3-ensure-data-privacy-by-design.md)
{% endtab %}

{% tab title="Risk" %}
[RS1 Privacy vulnerability](/safeguards/universal-dpi-safeguards-framework/risks/risks-to-safety.md), [SV4 Technical shortcomings](/safeguards/universal-dpi-safeguards-framework/risks/risks-to-structural-vulnerabilities.md)
{% endtab %}

{% tab title="Life Cycle Stage" %}
[L2: Strategy & Design](/safeguards/universal-dpi-safeguards-framework/responsible-authorities/r3-donor/l2-strategy-and-design.md)
{% endtab %}
{% endtabs %}

## Practices

> Design featues that offer users alternative authentication methods besides biometrics, such as passwords, tokens, or multi-factor authentication, to ensure user choice and privacy. 
>
> Design DPI systems to allow users to opt out of biometric authentication without losing access to essential services, maintaining inclusivity and accessibility. 
>
> Regularly review and update authentication options to ensure they remain secure, user-friendly, and compliant with privacy standards.

## Resources

<table data-view="cards"><thead><tr><th></th><th></th><th></th></tr></thead><tbody><tr><td>References</td><td></td><td></td></tr></tbody></table>


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