Enhanced biometric authorization

A system, comprising a computer including a processor and a memory, the memory storing instructions executable by the processor to:

• after receiving biometric data for a user, determine that user data for the user is unavailable, instruct the user to exit a structure, and generate user data for the user;
• obtain secondary enrollment biometric data for the user of the structure while the user is outside of the structure;
• based on determining that a confidence score for the secondary enrollment biometric data does not exceed a first confidence threshold, provide instructions to the user to provide updated secondary enrollment biometric data;
• then, after receiving the updated secondary enrollment biometric data, generate updated user data based on a confidence score for the updated secondary enrollment biometric data exceeding a second confidence threshold, wherein the second confidence threshold is greater than the first confidence threshold;
• authorize the user based on a confidence score for challenge biometric data exceeding the first confidence threshold;
• allow the user to re-enter the structure based on authorizing the user and then verify the user inside the structure based upon a confidence score for secondary challenge biometric data obtained outside of the structure exceeding the second confidence threshold;
• and
• control structure components based on verifying the user.