Patent attributes
This disclosure describes, in part, techniques for utilizing proxy contact information in order to allow merchants to communicate with customers. For instance, a payment service may receive, from a first merchant device, payment information and first contact information for a customer during a first transaction. The payment service may then associate the payment information with the first contact information. Next, the payment service may receive the payment information from a second merchant device during a second transaction. Based on receiving the payment information, the payment service may identify the first contact information using the association between the payment information and the first contact information, generate second contact information for the customer, associated the second contact information with the first contact information, and send the second contact information to the second merchant device. The second merchant can use the second contact information to communicate with the customer.