Press the print on the top left side of the form. This is where the user will start. What happens then is the print opens in the UNKNOWN image box and the corresponding image on the right side will also open in the KNOWN image box. The images can be dragged into position with the mouse if that is required. The objective is to see if the prints match or they don't match.
Now that the work space has been set up for the examiner to go to work the tools at the top of the page will be used to set up the prints so they are comfortable to the user. The tools are rotation, zoom, line and to erase a line right mouse click on the line will bring up a context menu that has the erase line.
Try to see the print patterns as shown in Basic Fingerprint Information manual. Sometimes the print may be turned and you will have to re- align it to get a better look and read of the print. For an example if you have two different patterns right away you know you don't have matching prints.
At this point the user doing the examination will start using his tools to mark points on the print. A majority of the time he will use the line tool. To use the line tool click the button to activate then place the cursor on the point to mark, hold down the left mouse button and drag the line to where you want it. All points can be erased using the eraser tool (right click mouse for context menu).
1.When finished using a tool click on it to turn it off.
2. To see fingerprint points open Basic Fingerprint Information manual, go to heading “Minutia points for comparison” . In these FPTraining exercises the basic points to look to mark are the ending ridge and the bifurcation points. The next step the user will take is to go to the KNOWN print and find the marks that match the ones on the UNKNOWN.
When marking points try to develop your own pattern of marking. Some people start at the center, others will start at the top or left or where they see and area that stands out. Always mark out from the point you have chosen. Try not to jump all around the print. When comparing to the other print Ridge Counting can be very helpful. For instance you have point 2 and 3 on the UNKNOWN print. You have point 2 on the KNOWN and want to find point 3. Counting the ridges on the UNKNOWN print from point 2 down to point 3 gives the user a number of ridges so now when he/she has point 2 on the KNOWN print just count the number of ridges to find the next point or to find if it is actually there. When the fingerprint marking is completed the user decides if the prints are Matching or Not Matching. If the prints match then there is a “Match” button and if they do not match then press the “Does Not Match” button.
This completes the first set of prints. To go on to the second just click on the second fingerprint on the left side of the screen. This sequence of events is followed until all sets are compared. When that is done the user presses “Finish Test” button in the bottom left corner of the screen. This takes the user to this screen.