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# kMEFormatReaderClassImplementationIDKey

The unique identifier for the format reader.

```
var kMEFormatReaderClassImplementationIDKey: String { get }
```

## Discussion

Format the string similar to the bundle identifier of the format reader. Start with the reverse domain identifier of your developer account, followed by `.formatreader.` and the name of the media format. If you plan to create multiple variants of the same media format, include an additional component to make each format reader identifier unique; for example `com.mycompany.formatreader.mymediaformat.formatvariant`.

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