All transactions are monitored on the platform and action will be taken in the event that the terms of sale are violated. If you fall into this category you will be informed via email that your account has been frozen and you will not be able to take any more payments. You will need to supply documentation proving that your transactions are legal and conform to the terms and conditions set out in your original agreement with Square.
Businesses that would be suspended or not accepted are those that sell illegal products or services that do not comply with state or federal law. Age restricted products like cigarettes need a card to be present for the transaction to proceed. Selling age-restricted products over the phone, mail order or the internet is prohibited. All transactions have to be linked to bonafide sales and you might be requested to produce invoices. Square is designed for the sale of goods and services only.