EXHIBIT 31.1

                      CERTIFICATION PURSUANT TO SECTION 302
                        OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Universal  Detection  Technology (the
"Registrant")  on Form 10-QSB for the period ending March 31, 2007 as filed with
the Securities  and Exchange  Commission on the date hereof (the  "Report"),  I,
Jacques  Tizabi,  Principal  Executive  Officer and Acting  Principal  Financial
Officer of the Registrant,  certify,  pursuant to Rules 13a-14 and 15-d14 of the
Securities  Exchange Act of 1934 (the "Exchange  Act"),  as adopted  pursuant to
ss.302 of the Sarbanes-Oxley Act of 2002, that:

I have reviewed this quarterly report on Form 10-QSB of the Registrant.

1. 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;

2.  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;

3. 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;

                  (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

                  (c)  Disclosed  in this report any change in the  Registrant's
internal  control over  financial  reporting  that occurred  during the Issuer's
fiscal  quarter  ending  March 31, 2007,  that has  materially  affected,  or is
reasonably  likely to  materially  affect,  the Issuer's  internal  control over
financial reporting.

4. The Registrant's other certifying  officer(s) and I have disclosed,  based on
our most recent evaluation of internal control over financial reporting,  to the
Registrant's  auditor  and the  audit  committee  of the  registrant's  board of
directors (or persons performing the equivalent functions):

                  (a) All 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

                  (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.


Dated: May 18, 2007               /S/ JACQUES TIZABI
                                  ------------------
                                  Jacques Tizabi
                                  Principal Executive Officer and Acting
                                  Principal Financial Officer