Currently FLUOR/IOTA uses a Nicmos III array of which only a very small number of pixels is read out. Using such a system would be the most basic solution and it is very likely that such a detector could be made available by one of the partners for the project, as the cosmetics and dark current are of little concern. However, a possible collaboration with D. Hall from the IfA at the Univeristy of Hawaii could allow to use small but very fast and very low readout noise infrared detectors developped by Rockwell and originally intended for wavefront sensing; this would allow to increase the sensitivity. We therefore feel that the detector will not be an obstacle.