Looking at this picture:
There is a elongated rectangular cutout in the top left corner which seems to match with this fingerprint scanner from authentec for mobile security.
The link is here: http://www.authentec.com/a/Production/smartsensors_mobile/AES2750.aspx
Just thought it would be great if that was what it was for, it would be great security for the possible NFC inclusion.

There is a elongated rectangular cutout in the top left corner which seems to match with this fingerprint scanner from authentec for mobile security.

The link is here: http://www.authentec.com/a/Production/smartsensors_mobile/AES2750.aspx
Just thought it would be great if that was what it was for, it would be great security for the possible NFC inclusion.