X0202 4 2005-05-03 0 0001051902 IQ BIOMETRIX INC IQBX 0001044321 MARXE AUSTIN W & GREENHOUSE DAVID M 153 E 53RD ST 55TH FL NEW YORK NY 10022 0 0 1 0 Common Stock 2005-05-03 4 S 0 1000 4.25 D 1499627 I By Limited Partnerships Common Stock 2005-05-04 4 S 0 2500 4.25 D 1497127 I By Limited Partnerships This is a joint filing by Austin W. Marxe (Marxe) and David M. Greenhouse (Greenhouse). They share voting and investment control over all securities own by Special Situations Private Equity Fund, L.P. (PE), Special Situations Technology Fund, L.P. (Tech) and the Special Situations Technology Fund II, L.P. (Tech II), respectively. 399,328 shares of Common Stock and 200,000 Warrants owned by PE, 84,562 shares of Common Stock and 42,500 Warrants owned by Tech and 513,237 shares of Common Stock, 257,500 Warrants owned by Tech II. The Interest of Marxe and Greenhouse in the shares of Common Stock owned by PE, Tech and Tech II is limited to the extent of his pecuniary interest. Austin W. Marxe 2005-05-05 David M. Greenhouse 2005-05-05