Hey, @ttrei-1161!
Geotab Drive can be used with NFC, but I wouldn't use NFC as a replacement for Geotab Drive. What NFC will do is connect your driver with his ON and D logs. What NFC won't do is give your drivers the interface they need to manage their OFF and SB logs.
[NOTE: One possible unintended consequence of using NFC to attach drivers to trips is that unless they are most definitely logging out via Geotab Drive, you may get HOS logs attached to the wrong drivers. If this happens a lot, I am fairly certain that it would be noticed by your DOT. This also creates a pretty big administrative headache because you need to ignore any logs that have been put onto the wrong driver, and then you or the driver will have to recreate those logs on his own account.]
As to the last question there, I believe that if the driver uses NFC and then incorrectly selects the wrong vehicle, he would be attached to the wrong vehicle. My understanding of this is that the driver will always be attached to the last vehicle he was put into. Since NFC would have come first in this scenario, I would expect the Geotab Drive one to be the vehicle he's currently put into.
Hope this helps! :)
Best,
Joy @FleetNavSystems-1081