![]() You may be all ready accepting Visa, MasterCard, American Express, or Discover but you can choose to accept all of them if you would like. The application is compatible with smartphones, tablets, and computers so you can choose the best way to accept cards based on your business type. Square allows businesses to process credit card payments by using their free application or device they send out. They also have other hardware devices like card readers which can be used by food trucks or any other businesses that are on the go. Square offers products like POS (point-of-sale) systems that are perfect for small business owners who want to take their business into the digital world or even just streamline their current operations with an electronic register system or set up online ordering through your website. As you may know, Square uses technology to make commerce easy for everyone involved. Square was founded by Jack Dorsey, cofounder of Twitter. They offer a variety of services for businesses, including mobile payments, point-of-sale systems, and eCommerce solutions. For instance, Safari has integrated support for Apple Pay, so the Apple Pay payment handler uses this to ensure that Apple Pay can be used to pay the merchant by sending merchantvalidation to the client, instructing it to fetch the server's validation data and deliver it to the payment handler by calling complete().Square Payment Processing has been around since 2009 and is one of the most popular forms of credit card processing. Thus, it's important to note that the user agent never sends a merchantvalidation event, unless the user agent itself implements a payment handler. Note this function must go through the merchant server, because a client typically does not access the validation URL itself.īy then delivering this data (or a Promise which resolves to the loaded data) to the payment handler by passing it into complete(), the payment handler can use the retrieved data and whatever algorithm and other data to support in order to verify that the merchant can use the payment handler. In this example, fetchValidationData() is a function which loads the payment handler specific identifying information from the address given by validationURL. Validated merchants are allowed to interface with a payment handler. Some payment handlers use merchant validation, which is the process of validating the identity of a merchant in some way, usually using some form of cryptographic response such as a public key. The implementation of the code needed to interface with a particular payment method provider in order to process payments. For example, when using a credit card to pay, the credit card processing service is the payment method provider. payment method providerĪn organization that provides the technology needed to submit payments using a given payment method. The instrument by which payment is submitted, such as a credit card or online payment service. The payer authenticates themselves, then authorizes payment, as required by the payment method. The person or organization making a purchase using a web site or app. The merchant-either a person or an organization-whose web site or app wishes to receive money through the Payment Request API. Before getting into the details of how the API operates, there are items you'll need to know.
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