Dual Mode Payment and Display System

A dual mode payment interface device comprising:

• a touch screen display;
• stored instructions for operating in a first mode of operation and a second mode of operation;
• a means for detecting a communicative connection with a display device;
• a means for enabling the second mode of operation in response to the means for detecting the communicative connection detecting the communicative connection;
• wherein the dual mode payment interface device provides access to a merchant system interface on the touch screen display and provides access to a customer system interface on the touch screen display in the first mode of operation;
• and
• wherein the dual mode payment interface device is programmed to do one and only of the following in the second mode of operation:
• (i) provide access to the customer system interface on the touch screen display and do not provide access to the merchant system interface on the touch screen display;
• and (ii) provide access to the merchant system interface on the touch screen display and do not provide access to the customer system interface on the touch screen display.

A system, comprising:

• a dual mode payment interface device having a touch screen display and storing instructions for operating in a first mode of operation and a second mode of operation;
• wherein the first mode of operation provides access to a merchant system interface on the touch screen display and provides access to a customer system interface on the touch screen display;
• wherein the second mode of operation provides access to only one of the customer system interface and the merchant system interface on the touch screen display;
• a display device having a second touch screen display;
• wherein the second mode of operation provides access to only one of the customer system interface and the merchant system interface on the second touch screen display;
• wherein the first and second touch screen displays provide access to different interfaces in the second mode of operation;
• a wire that provides a communicative connection between the dual mode payment interface device with the display device;
• a means for detecting the communicative connection, located on the dual mode payment interface device;
• and
• a means for enabling the second mode of operation in response to the means for detecting the communicative connection detecting the communicative connection.