EXHIBIT 23.1


                        CONSENT OF INDEPENDENT AUDITORS


We consent to the reference to our firm under the captions "Experts" and "IVI
Checkmate Selected Financial Data" in Amendment No. 5 to the Registration
Statement (Form S-4, No. 333-83743) of IVI Checkmate Corp. and to the inclusion
therein of our reports, dated February 18, 2000 (except for Note 14, as to which
the date is February 22, 2000), with respect to the consolidated financial
statements of IVI Checkmate Corp. and February 15, 2000, with respect to the
financial statements of National Transaction Network, Inc. as of and for the
year ended December 31, 1999 included therein and incorporated by reference.



                                /s/ Ernst & Young LLP
                                ---------------------


Atlanta, Georgia
May 1, 2000