Yes, a special type should be used. The probe should have a flat surface and not a pointed, serrated, or tulip surface. You want the head of the probe to slide a little on the bead when it hits the bead to help remove contaminants from the surface. Pointed probes do not slide on or scrub the surface as well. Various probe manufacturers are making probes for use with Bead Probe Technology.
Examples are the 100-25 and X75-25 probes from QA Technology. Contact your local probe supplier to inquire about probes for Bead Probe Technology.
A flat head probe (BeadProbe Probe) will always perform a wiping action due to it finding it's home location on the bead. Since there is no pointed end to guide the probe to the same spot each time, the probe will self-locate as it makes contact with the bead. This self-locating will form the wiping action.
There is a recorded webcast which I believe is still available. You might find some useful information in the webcast.
This is a flash demo on i3070, within its module there is a section of beadbprobe flash. Note you would need the introduction to finish playing, and select the beadprobe section from the menu.
Examples are the 100-25 and X75-25 probes from QA Technology. Contact your local probe supplier to inquire about probes for Bead Probe Technology.