NAK Error from PIN Pad

NAK Error From Pin Pad” and “Unsuccessful Obtaining SerialNo from PIN pad” errors occur between the client and card entry device. This means the device Negatively Acknowledged a command from the client or the client did not understand the response returned by the device.


Upgrade to the latest version of the Client located here under “Client Controls”.


Still need help?

How can we help?

Call us (215-997-8989) or Send us a message