Transaction Security

Interac transaction requests require the use of a PIN Pad device. Messages must use one of the following:

Voltage encryption of the Card Data
Message Authentication Code (MAC)
PIN Pad (PED) Serial Number

Both Voltage and MAC cannot be used on a single PIN Pad device. If Voltage encryption is used, then any references to MessageAuthenticationCode do not apply.

Device TID must be set up on the Host for the type of transaction security in use.