> For the complete documentation index, see [llms.txt](https://help.windmillsoft.kr/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.windmillsoft.kr/en/simplychat/release-notes/ver-2.20.1.1.md).

# Ver 2.20.1.1

## **Improvements and changes**

* **Improved handling of chat user identification (userKey)**
  * A new identification field (UserKey(CS)) will be added to improve the accuracy of user identification.
  * Existing data will not be affected.
* Stabilized message transmission and reception on the chat screen