How can I create a pocket door locking mechanism?
My pocket doors have large, easy-to-use, visible latching mechanisms.  We had the pocket doors installed in extra-wide door openings, so that 4 inches of each pocket door is exposed when the door is in the fully-open position.  This leaves room for a large handle and the latch.

The latches are labelled JAKO® INOX.  The handles are labelled JAKO®.  My door handles are 3/4" thick and about 7 1/4" from center-to-center, so they are more similar to Don-Jo's door handles than to Jako's current model.

Inox also offers a line of pocket door locks.