Throughout both continuities, we see many times that stealing ships is exceptionally easy, as they appear to only rarely be locked, and to not require keys, passcodes, etc. to fly them.
A few examples:
- In the Knights of the Old Republic series, the Ebon Hawk is infiltrated or broken into by a stowaway, the Handmaiden and a gang of criminals, respectively.
- In The Phantom Menace, Anakin and R2-D2 are able to jump in a starfigher that apparently features a security system so weak that they accidentally fly it away.
- In the Star Wars: The Clone Wars pilot movie, Anakin and Ashoka are easily able to take over The Twilight, granted the door was already open.
- In the episode Twilight if the Apprentice, of Star Wars: Rebels, Chopper is able to enter and pilot the Eighth Brother's ship and
Maul is able to steal a TIE Advanced.
- In The Return of the Jedi, Luke is able to take an Imperial Shuttle and fly it away.
(Anakin was dead at this point, so he wouldn't have been able to help.)
- In The Force Awakens, Finn and Poe were able to steal an Elite TIE-Fighter (though this one was at least connected by a cable, it still apparently had no security systems more advanced than that of a pen at a bank). We also learn that the Millennium Falcon has been stolen four separate times since Return of the Jedi.
Why aren't ships in Star Wars locked? And why can just about anyone fly them? Wouldn't people like Han, who obviously cares immensely about his ship, add some advanced security systems, or at least make the ship require keys or something?