Comment on social media where I first saw this: "SIM Cards are actually tiny computers that have a filesystem and run Java apps that communicate directly with

Comment on social media where I first saw this: "SIM Cards are actually tiny computers that have a filesystem and run Java apps that communicate directly with users ..." -- https://mathstodon.xyz/@codepuppy/111141594244217815 https://mathstodon.xyz/@codepuppy/111141594244217815