During Kirk's time, Federation ship registry were only 4 digits (NCC-1864 and NCC-1701). A 5 digit prefix code is more than enough that they get by without repeating a number. I gloss over stuff like that as part of
suspending disbelief.
Maybe they had a limited login attempt before the system locks you out. We have the technology today.😉
What bugs me is when a Vulcan makes generalized comment as statements of fact. "Vulcans cannot lie." (Spock...on multiple occasions in multiple series😓) That's utter BS. Vulcans can lie. Spock lied about Vulcans not being able to lie.🤥 Heck, Spock has lied so many times I'm surprised his pants hasn't caught fire.🤨 "
Vulcans don't drink," says the Vulcan who proceeds imbibe with 2 other Vulcans.😑 Explain
Vulcan port and
Vulcan brandy. Vulcans don't drink. Yeah right.🙄 I'll chock it up to Vulcans wanting to project a image of superiority.