Patent attributes
The disclosure describes, in part, techniques for performing pre-authorization during a transaction between a merchant a customer. For instance, a payment service may receive, from a merchant device, payment information of a payment instrument that is used to satisfy a cost of a first item. The payment service may then send an authorization request to a card payment network to hold a first amount of funds based on previous purchase activity. The payment service may further send the merchant device information associated with the customer. Next, the payment service may receive an indication that the customer requests to purchase a second item. In response, the payment service may send a request to the card payment network to capture a second amount of funds that is based on the cost of the first item and a cost of the second item. In response, the payment service may receive approval from the card payment network.
