Dear all,

I am working on a project in which I have to develop bio-passwords based on user's keystroke style. Suppose a user types a password for 20 times, his keystrokes are recorded, like

holdtime : time for which a particular key is pressed. digraph time : time it takes to press a different key.

suppose a user types a password " COMPUTER". I need to know the time for which every key is pressed. something like :

holdtime for the above password is

C-- 200ms O-- 130ms M-- 150ms P-- 175ms U-- 320ms T-- 230ms E-- 120ms R-- 300ms

The rational behind this is , every user will have a different holdtime. Say a old person is typing the password, he will take more time then a student. And it will be unique to a particular person. To do this project, I need to record the time for each key pressed. I would greatly appreciate if anyone can guide me in how to get these times.

Editing from here.. Language is not important, but I would prefer it in C. I am more interested in getting the dataset.