My authenticator security keychain is having issues

my authenticator security key key chain, is starting to not work properly i know i can't get a new keychain and i don't have a cell phone (not interested in that technology) is there something i can download and add to my computer to get the authenticator number sequence like an app or something.. my keychain isn't dead yet but i think it will at some point, and i want to continue to play swtor... I'm a preferred player i got the keychain thing back when i made my account a week after the game came out, and got the keychain shortly after... i hope there is something i can do... or it could be i can't play it, if the key dies

(I know a bit of a ramble typing (a take on) stewie griffon's ramble writing reference, "Just to break the ice"(i do this sometimes heheh) but i do need help with this key thing (that's no joke)