RFID user verification

I got a request to have an entry verified or signed off on with a RFID badge. I know RFID can be used to login but can it be used similar to the system.security.validateUser()? I’d like to do the verification without having to have the user fully log out and back in since it would be at the last step of an entry and then would need to shift back to the generic login after the entry is completed. I’d like to store the user name associated with the badge in the database entry that is created.