Exhibit 31.1

CERTIFICATIONS

I,
Erik Dysthe,  President,  Chief  Executive  Officer,  Chairman of the Board and Director
of MDSI Mobile Data Solutions Inc., certify that:

1.        I have reviewed this
Quarterly Report on Form 10-Q of MDSI Mobile Data Solutions Inc.;

2.        Based on my  knowledge,
 this report does not contain any untrue  statement of a material  fact or omit to state
a material  fact  necessary  to make the  statements  made,  in light of the
 circumstances  under which such statements were made, not misleading with respect to the
period covered by this report;

3.        Based on my  knowledge,
 the  financial  statements,  and other  financial  information  included  in this
report,  fairly present in all material respects the financial  condition,  results of
operations and cash flows of the registrant as of, and for, the periods presented in this
report;

4.        The  registrant's  other
 certifying  officer(s) and I are  responsible for  establishing  and maintaining
disclosure  controls and procedures  (as defined in Exchange Act Rules  13a-15(e) and
15d-15(e)) for the registrant and have:

| | (a) |  | Designed
 such  disclosure  controls  and  procedures,  or caused such  disclosure  controls  and
                  procedures to be designed under our  supervision,  to ensure that
material  information  relating                   to the  registrant,  including  its
 consolidated  subsidiaries,  is made  known to us by  others                   within
those entities, particularly during the period in which this report is being prepared;
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| | (b) |  | Evaluated
 the  effectiveness  of  the  registrant's   disclosure  controls  and  procedures  and
                  presented in this report our  conclusions  about the  effectiveness  of
the  disclosure  controls                   and  procedures,  as of the end of the period
 covered by this report  based on such  evaluation;                   and
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| | (c) |  | Disclosed
 in this  report  any  change  in the  registrant's  internal  control  over  financial
                  reporting that occurred  during the  registrant's  most recent fiscal
 quarter (the  registrant's                   fourth  fiscal  quarter in the case of an
annual  report)  that has  materially  affected,  or is                   reasonably
 likely to  materially  affect,  the  registrant's  internal  control  over  financial
                  reporting; and
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5.        The registrant's  other
certifying  officers and I have disclosed,  based on our most recent evaluation of
internal  control  over  financial  reporting,  to  the  registrant's  auditors  and  the
 audit  committee  of the registrant's board of directors (or persons performing the
equivalent functions):

| | (a) |  | All
 significant  deficiencies  and  material  weaknesses  in the design or operation of
internal                   control  over  financial   reporting  which  are  reasonably
  likely  to  adversely  affect  the                   registrant's ability to record,
process, summarize and report financial information; and
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| | (b) |  | Any
fraud,  whether or not  material,  that  involves  management  or other  employees who
have a                   significant role in the registrant's internal control over
financial reporting.
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|Date:  November 15, 2004 | /s/ Erik Dysthe
Erik Dysthe
President, Chief Executive Officer,
Chairman of the Board and Director
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