Exhibit 23

The Stockholders and Board of Directors
VASCO Data Security International, Inc.:

We  consent  to  incorporation  by  reference  in  the  registration
statement  (No.  333-62829)  on  Form  S-8  of  VASCO  Data  Security
International, Inc. of our report dated March 12, 1999, except as to
Note 12 which is as of April 15, 1999, relating to the consolidated
balance  sheets  of  VASCO  Data  Security  International,  Inc.  and
subsidiaries as of December 31, 1998 and 1997, and the related
consolidated  statements  of  operations,  comprehensive  income,
shareholders' equity (deficit), and cash flows for each of the years
in the three-year period ended December 31, 1998, and the related
consolidated financial statement schedule, which report appears in the 
December 31, 1998 annual report on Form 10-K of VASCO Data Security
International, Inc.


                                 /s/  KPMG LLP


Chicago, Illinois
April 15, 1999