They operate differently from their genuine dollars counterparts, and California residents can legally enjoy them. https://www.cityofsomersettx.com/%EC%8A%A4%ED%8F%AC%EC%B8%A0%ED%86%A0%ED%86%A0-%EC%95%88%EC%A0%84-%EA%B2%80%EC%A6%9D-%EC%95%88%EC%A0%84%ED%95%9C-%EB%B2%A0%ED%8C%85%EC%9D%84-%EC%9C%84%ED%95%9C-%ED%95%84%EC%88%98-%EA%B0%80%EC%9D%B4/