No, you are not permitted to share your REX user account. Sharing a user ID for REX is against REX’s veterinary end user agreement. By sharing a user ID and password, REX is unable to accurately track records. REX records a user ID with the entries that a user makes. For example, if 2 veterinarians share the same user ID, the DEA journal records that REX creates has no way of discerning who administered a controlled substance to a pet, and the records will be inaccurate.