> For the complete documentation index, see [llms.txt](https://coin-musme.gitbook.io/coin-musme-white-paper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://coin-musme.gitbook.io/coin-musme-white-paper/english-1/3.-game-start/3.7-fraud-prevention.md).

# 3.7 Fraud prevention

In order to prevent fraud such as the creation of multiple accounts using bots, the following functions will be opened when a player has drawn the in-game gacha at least once. 

・After the fourth consecutive high & low challenge 

・Writing messages in the chat rooms.

・Importing and exporting NFTs