EXHIBIT 99.4

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D (including additional amendments thereto) with respect to the shares of Common Stock, par value $.01 per share, of Vicon Industries, Inc., a New York corporation. This Joint Filing Agreement shall be filed as an Exhibit to such Statement.