# Function: connectionKey()

```ts
function connectionKey(known): string;
```

Defined in: [packages/core/src/session/auth.ts:271](https://github.com/leifriksheim/minca/blob/main/core/src/session/auth.ts#L271)

Which kept connection this is: an app by its origin, and a program
connected by code or a carrier by its key, since one origin has several.

## Parameters

| Parameter | Type |
| ------ | ------ |
| `known` | [`Connection`](https://minca.dev/api/session/interfaces/Connection.md) |

## Returns

`string`