EXHIBIT 23.1










                              CONSENT OF ATTORNEYS

      Reference is made to the Registration Statement of Security Devices, Inc.
on Form SB-2 whereby certain selling shareholder propose to sell up to 2,814,880
shares of the Company's common stock. Reference is also made to Exhibit 5
included in the Registration Statement relating to the validity of the
securities proposed to be issued and sold.

      We hereby consent to the use of our opinion concerning the validity of the
securities proposed to be issued and sold.


                                Very truly yours,

                              HART & TRINEN, L.L.P.



                               /s/ William T. Hart
                                -----------------------
                                 William T. Hart

Denver, Colorado
March 14, 2006