[KUMMER KAEMPFER BONNER & RENSHAW LETTERHEAD]


                                 April 23, 2001



eRoomSystem Technologies, Inc.
3770 Howard Hughes Parkway, Suite 175
Las Vegas, Nevada 89109

   RE:   EROOMSYSTEM TECHNOLOGIES, INC.
         REGISTRATION STATEMENT ON FORM SB-2 (THE "REGISTRATION STATEMENT")

Ladies and Gentlemen:

     As outside counsel to eRoomSystem Technologies, Inc., a Nevada corporation
(the "Company"), we are rendering this opinion in connection with the
registration by the Company of 321,875 shares of the Company's common stock,
$0.001 par value ("Common Stock"), on behalf of certain selling stockholders
(the "Selling Stockholder Shares"), and 341,180 shares of Common Stock on behalf
of certain warrant holders (the "Warrant Holder Shares").

     We have examined all instruments, documents and records which we deemed
relevant and necessary for the basis of our opinion hereinafter expressed. In
such examination, we have assumed the genuineness of all signatures and the
authenticity of all documents submitted to us as originals and the conformity to
the originals of all documents submitted to us as copies.

     Based on such examination and subject to the completion of all conditions
to closing provided under the relevant underwriting agreement, and subject to
such other limitations hereinabove provided, we are of the opinion that:

     1.   The Selling Stockholder Shares have been duly authorized and are
          validly issued, fully paid and nonassessable; and

     2.   The Warrant Holder Shares have been duly authorized and reserved for
          issuance upon the exercise of the warrants and, when issued upon such
          exercise in accordance with the terms of the relevant warrant
          agreements at the price therein provided, will be validly issued and
          fully paid and nonassessable.



Securities and Exchange Commission
April 23, 2001
Page 2


     Insofar as the foregoing opinions relate to the legality, validity, binding
effect or enforceability of any agreement or obligations of the Company: (i) we
have assumed that each party to such agreement or obligation has satisfied those
legal requirements that are applicable to it to the extent necessary to make
such agreement or obligation enforceable against it; (ii) such opinions are
subject to applicable bankruptcy, insolvency, reorganization, liquidation,
receivership, fraudulent conveyance or similar laws, now or hereafter in effect,
relating to creditors' rights generally; and (iii) such opinions are subject to
the general principals of equity, including, without limitation, concepts of
materiality, reasonableness, good faith and fair dealing (regardless of whether
considered in a proceeding at law or in equity).

     We hereby consent to the filing of the foregoing opinion as an exhibit to
the Registration Statement and to the use of our name in the Registration
Statement and in the related Prospectus under the heading "Legal Matters."

                                       Sincerely,

                                       /s/ Kummer Kaempfer Bonner & Renshaw

                                       KUMMER KAEMPFER BONNER & RENSHAW