EXHIBIT 5


                             November 25, 1997


Interface Systems, Inc.
5855 Interface Drive
Ann Arbor, Michigan  48103


Ladies and Gentlemen:

       We have served as counsel to Interface Systems, Inc. (the "Company")
in connection with the preparation of the Registration Statement (Form S-8)
to be filed by the Company on November 25, 1997 with the Securities and
Exchange Commission under the Securities Act of 1933, as amended,
representing the issuance in the manner described in the Registration
Statement of 225,000 shares of the Company's Common Stock, $.10 par value
(the "Common Stock"), pursuant to the Interface Systems, Inc. Employee Stock
Purchase Plan.

       We have examined and relied upon the originals, or copies certified
or otherwise identified to our satisfaction, of such corporate records,
documents, certificates and other instruments as in our judgment are
necessary or appropriate to enable us to render the opinion expressed below.

       Based upon such examination and our participation in the preparation
of the Registration Statement, it is our opinion that (1) the Company is
duly incorporated and validly existing as a corporation in good standing
under the laws of Delaware and (2) the Common Stock, when issued in the
manner described in the Registration Statement, will be validly issued,
fully paid and nonassessable.

       We consent to the filing of this opinion as Exhibit 5 to the
Registration Statement.

                                            Very truly yours,

                                            DYKEMA GOSSETT PLLC

                                            /s/ Marguerite M. Gritenas

                                            Marguerite M. Gritenas
                                           (313) 568-6503