Frequency hopping is no small idea to crack because you either need a shared codebook (PRNG) or a means of re-keying to an ephemeral window of future sequences.

Frequency hopping is no small idea to crack because you either need a shared codebook (PRNG) or a means of re-keying to an ephemeral window of future sequences. Didn't read Lamarr's patent but she seems a natural hacker girl taking music boxes apart aged 5.