Really thank you so much for the replies... really appreciate it.. and very sorry for the insufficient information...as i pretty new to Labview... Actually, i don't intend to built the hardware... mean that i just will design the software part.... lik i store an iris image in the library,and load another 2 iris image which 1 of them is the same,and the other 1 is different... i just wan the system to differentiate whether is match or mismatch... Can labview do this function?? or i should use Matlab script to do the comparison?? If using matlab coding,i know there r many type of recognition method...so i quite confused on which to go... So does labview itself can perform the function?? On top of that,i find that IMAQ vision for labview can view image and handle image function...but why my labview version 8.0 dun have this function? Is this an extra function that i need to download? Do i need any external plug in for this? Can all this be done in 2 weeks time? According for ur experts opinion, is the time frame sufficient for this project?