Exhibit 23.1 CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS Single Source Electronic Transactions, Inc. 10780 Santa Monica Blvd., Suite 240 Los Angeles, California 90025 We consent to the use in this Registration Statement of Single Source Electronic Transactions, Inc., on Form SB-2 /A of our report dated March 24, 2001, and to the reference to us under the headings "Experts." /s/ Jonathon P. Reuben C.P.A. Jonathon P. Reuben, C.P.A. An Accountancy Corporation Torrance, CA 90505 April 12, 2001