Frequently asked questions will be posted as they are submitted.

The registration form has a checkbox for anonymous participation. If we register non-anonymous will we be able to change this status later?

• Anonymous/non-anonymous status may be changed up until individual results are given to each competitor. After that point, participants must choose to be anonymous or non-anonymous.

1) What should my system output if it cannot process the image?

• Any image that your algorithm cannot process should have an output of -1000 in the results.

2) How will a -1000 be handled when computing the error?

• In the table we will separate APCER, BPCER, and APNRR. In computing the overall average and overall winner, -1000 will be included. In this case a failure to enroll will be considered an error for a live image and correct for a spoof image.

3) Do you require that a system store an image?

• If the system is able to generate an output score for the presented finger or spoof then a stored image should be supplied, however it is not mandatory. If the system cannot sense that a finger or spoof is presented to the device then no image can be stored and then a non-response is recorded.

4) What happens with non-response?

• For a system the ability to not acquire a spoof will be considered correct rejection of a fake and calculated as the Attack presentation non-response rate. The ability to not acquire a live finger will be considered incorrect rejection of a live finger and calculated as the Failure to Acquire rates. In computing the overall average and overall winner, Attack presentation non-response rate and Failure to Acquire will be considered.

5) Can I submit multiple systems and algorithms for the competition?

• The answer is yes. However, we would publish the result of all the submissions.