There is no need for a hashtag with LIVESHARE. Hashtag use limits your photo captures as all tagged photos posted must be available in a public not private account. Further, some channels are simply restricting access altogether by disabling third party applications.
A LIVESHARE eliminates the worry of missing those candid moments someone else is committing to memory. You have the choice to allow posts with or without registration, so, contributions are as simple as scanning a code and uploading. #NOHASHTAGREQUIRED