Wouldn’t it just need to know which is the highest message number it has seen? And then don’t accept that one or any lower ever again?

If the count is within the encrypted message, no one can spoof anything higher.

Could it only accept serialized messages? Once it’s received a message, never accept the same exact message again.

Might be a good use for PGP. The signal can be snooped and spoofed, but the messages should be end-to-end encrypted.

cake day

before that, it was the whole restaurant

Sometimes I forget that smoking is a thing, and then (after sometimes a whole year) I see someone doing it, and I’m like, “woah, people still smoke.” It was everywhere when I was a kid—even inside restaurants.

this one trick IT hates