EXHIBIT 23.1 INDEPENDENT AUDITORS' CONSENT The Board of Directors Research Frontiers Incorporated We consent to the use of our report dated March 9, 2004, with respect to the consolidated balance sheets of Research Frontiers Incorporated and subsidiary as of December 31, 2003 and 2002, and the related consolidated statements of operations, stockholders' equity and cash flows for each of the years in the three-year period ended December 31, 2003, incorporated herein by reference and to the reference to our firm under the heading "Experts" in the Registration Statement. /s/ KPMG LLP KPMG LLP Melville, New York November 8, 2004