You should NEVER use Contact Mode with anyone who has a pacemaker. The electrical signals can disrupt the pacemaker's electronics. You should ONLY ever use either plasma or remote.
You can use Remote Mode to scan - I do it this way all the time.
It doesn't really matter whether you use a black or white Remote to scan with. But I'd recommend using the white one to treat with.
Please use the settings shown on page 163 and 164 of the current (May) Spooky2 User's Guide.
For more details, please check the link: