“The loophole in the law is that the business can refuse cash if they have a device to accept pre-paid cards instead.”
You might want to take a class on reading comprehension ...
Nothing wrong with it my reading comprehension.
From the article, Also, if a business has a device to transfer cash into a prepaid card, it can also refuse to accept cash. However, the device can’t charge a fee, can’t require a minimum deposit of more than $1, and the card can’t expire.
It just means the business can refuse to take cash for its business if it has the means to transfer the cash to a prepaid card separately from the business.