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# FieldExtensionType Enumeration

Namespace: id3.Bioseal

## Definition

Enumerates the field extension types.

## Fields

Name | Value | Description
--- | --- | ---
`none` | 0 | No information given.
`unknown` | 1 | No information given.
`image` | 2 | The Image extension specifies the expected type and format of the image data.
`portrait` | 3 | The Portrait extension specifies the guidelines to create the portrait image.
`biometric` | 4 | The Biometric extension specifies the expected type and format of the biometric data in the payload.
`compression` | 5 | The Compression extension specifies the compression parameters.
`encryption` | 6 | The Encryption extension is used to maintain the confidentiality of specific data in the payload.