Point-of-sale system having a secure touch mode

A point-of-sale system used in performing a point-of-sale transaction between a merchant and a consumer, the system comprising:

• a consumer terminal including a display, a touch panel, first electronics in a non-secure area and second electronics in a physically secure area,
• the first electronics in the non-secure area comprising:
• a non-secure consumer terminal processor;
• a non-transitory computer readable medium having instructions stored therein that when executed by the non-secure consumer terminal processor causes the non-secure consumer terminal processor to:
• display a series of screens in a consumer facing graphical user interface on the display that guides the consumer through the point-of-sale transaction,
• provide a personal identification number (PIN) request to the second electronics,
• receive a first message to enter a secure touch mode,
• enter the secure touch mode in response to the first message, wherein the non-secure consumer terminal processor does not receive consumer inputs during the secure touch mode, and
• receive a second message to exit the secure touch mode and enter a pass-through mode, wherein the non-secure consumer terminal processor receives the consumer inputs during the pass-through mode;
• and
• the second electronics in the physically secure area comprising:
• a microcontroller coupled to the touch panel and that receives the consumer inputs from the touch panel during the point of sale transaction, and
• a secure processor coupled to the microcontroller and that receives the consumer inputs from the microcontroller, the secure processor:
• receives the PIN entry request from the non-secure consumer terminal processor,
• sends the first message to the non-secure consumer terminal processor based on the received PIN entry request, wherein during the secure touch mode the consumer inputs received at the microcontroller are not transmitted to the non-secure consumer terminal processor,
• determines that a PIN entry is complete, and
• sends the second message to the non-secure consumer terminal processor based on the determination that the PIN entry is complete, where all of the consumer inputs received at the microcontroller during a pass-through mode are passed to the non-secure consumer terminal processor.