<PAGE>
Exhibit 23.1
CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
We consent to the reference to our firm under the captions "Selected
Consolidated Financial Data" and "Experts" and to the use of our report dated
March 7, 2000, in Pre-Effective Amendment No. 1 to the Registration Statement
(Form S-3 No. 333-47160) and related Prospectus of Carreker Corporation
(formerly Carreker-Antinori, Inc.) for the Registration of 4,000,000 shares
of its common stock.
/s/ Ernst & Young LLP
Dallas, Texas
October 26, 2000
