sharing topo pkg on 2 60cx

My brother and I are interesed in purchasing 2 garmin 60cx's with 1
topo canada pkg.
does anyone know if the topo pkg be shared between 2 or 3 units ?, or
can the cd;s be copied to share? any info is appreciated....thanks

        In general most data MAPs are protected or won't be shared by more than
one unit without KEY. But I read the TOPO is not protected so it's possible
to install to multiple Garmin Units.

If you're looking for a legal solution, and don't require autorouting, check
out http://www.ibycus.com/ibycustopo for free Canadian Topo maps.

Dale