PIN Pad Errors

NAK Error from PIN Pad

NAK errors occur between the client (dsiEMVUS) and the PIN pad. A NAK error means the PIN pad negatively acknowledged a command from dsiEMVUS or dsiEMVUS did not understand the response returned from the PIN pad.

How to change PIN Pad interface settings

Check the instructions below to view different ways to set interface settings for various PIN Pads.  Be sure to check back as we add support for new PIN Pads.