In many jurisdictions, consent is required from an individual before their Biometric data can be processed. The degree of formality of this consent will be driven by the implementing organisations' interpretation of the relevant legislation. In some cases, consent can be inferred from existing contractual terms but as a minimum or the absence of any objection (aka opt-out). Still, in many cases, some more explicit form of positive consent (aka opt-in) is required before enrolment and registration can be completed. Legal guidance should always be sought before processing Biometric data. Consent is usually obtained in response to an offer of enrolment from an agent or automated system during the Registration process.