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Exhibit 23.3
INDEPENDENT AUDITORS' CONSENT
The Board of Directors
S1 Corporation:
We consent to the incorporation by reference in the Post-Effective Amendment
No.1 to the Form S-8 registration statement (No. 333-82381) of S1 Corporation of
our reports dated February 4, 1999, relating to the consolidated balance sheet
of S1 Corporation and subsidiary as of December 31, 1998, and the related
consolidated statements of operations, stockholders' equity and comprehensive
income (loss), and cash flows for each of the years in the two-year period ended
December 31, 1998, and the related financial statement schedule, which reports
appear in the December 31, 1999 annual report on Form 10-K of S1 Corporation.
/s/ KPMG LLP
KPMG LLP
Atlanta, Georgia
August 7, 2000
