I remember playing with my DefCon 18 badge and thinking to myself, "This looks like ternary. I wonder what it does." After a few minutes groking the (provided

I remember playing with my DefCon 18 badge and thinking to myself, "This looks like ternary. I wonder what it does." After a few minutes groking the (provided, but obfuscated) badge source code, I plugged some values into bc (after setting obase=3), tried them forward and backward (both inverted and normal) and got the "Ninja Party Unlocked!" message on my badge. If only I had known the secret location of the party, I would have tried to get in.