Marketing messages in mobile commerce

A computer-implemented method of conducting wireless transaction, comprising:

• receiving, by a point of sale device from a mobile device of a consumer using an antenna, one or more electromagnetic signals;
• interpreting, by the point of sale device, the one or more electromagnetic signals to determine information related to a financial account of the consumer;
• initiating, by the point of sale device using a network interface, a connection with an acquirer system;
• transmitting, by the point of sale device using the network interface, a packet of data comprising an authorization request over the connection to the acquirer system, the authorization request comprising the information related to the financial account, a merchant identifier, a date, and a transaction amount;
• receiving, by the point of sale device, responsive to transmitting the authorization request and over the connection, an authorization code from the acquirer system, the authorization code indicating that the authorization request has been approved;
• receiving, by the point of sale device, responsive to the transmitting the authorization request and using the connection, an electronic receipt from the acquirer system;
• modifying, by the point of sale device, the electronic receipt to generate a modified electronic receipt including transaction-specific information and encrypted information supplied by a merchant associated with the point of sale device, the encrypted information comprising information that is usable to verify one or more of an origin of the electronic receipt, contents of the electronic receipt, and an authenticity of the electronic receipt;
• and
• transmitting, by the point of sale device using one of the antenna or the network interface, the modified electronic receipt to the mobile device.

A non-transitory computer-readable medium having instructions stored thereon that, when executed by one or more processors of a point of sale device cause the point of sale device to:

• receive, from a mobile device of a consumer using an antenna, one or more electromagnetic signals;
• interpret the electromagnetic signals to determine information related to a financial account of the consumer;
• initiate, using a network interface of the point of sale device, a connection with an acquirer system;
• transmit, using the network interface a packet of data comprising an authorization request over the connection to the acquirer system, the authorization request comprising the information related to the financial account, a merchant identifier, a date, and a transaction amount;
• receive, responsive to transmitting the authorization request and using the connection, an authorization code from the acquirer system, the authorization code indicating that the authorization request has been approved;
• receive, responsive to transmitting the authorization request and using the connection, an electronic receipt from the acquirer system;
• modify the electronic receipt to generate a modified electronic receipt including transaction-specific information and encrypted information supplied by a merchant associated with the point of sale device, the encrypted information comprising information that is usable to verify one or more of an origin of the electronic receipt, contents of the electronic receipt, and an authenticity of the electronic receipt;
• and
• transmit the modified electronic receipt to the mobile device.