Specifies the kind of an interaction source.
This only enumerates sources of interactions, such as hand gestures and voice commands.
| Other | The interaction source is of a kind not known in this version of the API. |
| Hand | The interaction source is one of the user's hands. |
| Voice | The interaction source is the user's speech. |
| Controller | The interaction source is of a kind not known in this version of the API. |