Here is a document telling you the preparation and setting of how to do a biofeedback scan:

And here is the Italian Version:

Here is the video to show how to do a biofeedback scan:

For the version 1 Dec 2016:

For the version July and below:

Spooky also has a feature called "Reverse Lookup". Hits found from a Biofeedback Scan using Spooky Pulse can be searched in the extensive Spooky2 database. For more detailed info, please check here.