Which credential types are permitted for DEA-sanctioned validation in Electronic Prescription for Controlled Substances (EPCS)?

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Electronic prescriptions for controlled substances require multi-factor authentication, meaning you verify your identity using credentials from more than one category. The allowed categories are something you know (like a password or PIN), something you have (a token, smart card, or mobile device), and something you are (biometrics such as a fingerprint). That combination protects against someone gaining access with just one credential. The best answer lists all three categories, showing the range of credential types that can be used. Using only a single factor—whether a password alone, a biometric alone, or a smart card alone—doesn’t meet the requirement for DEA-sanctioned validation. In practice, you typically need at least two of these categories, and you may use more if the system supports it.