What was in the lectures?
It is the 1920s and you are the great Houdini!
Houdini hated so-called “mediums” taking advantage of grief-stricken people trying to contact loved ones who had died and successfully undertook a personal mission to expose mediums as being fakes.
However, Houdini (correctly) anticipated that after his own death it was quite likely that unscrupulous fake mediums would try to pretend his spirit was in touch with them, and they would claim that the dead Houdini was saying they were not fakes after all (!)
So, to forestall them, he publicly announced that he would try to contact his wife Bess via mediums after his own death, and then he privately worked out a protocol with her to prevent the mediums from claiming his “spirit” was telling them messages to pass onto Bess, when in fact they were just inventing the messages.
The purpose of the protocol was: to prevent mediums from cheating and successfully pass off false messages to Bess claiming they were from Houdini (after he had died) thus tricking the public and/or Bess
Sadly, Houdini’s actual protocol was flawed.
Not the abstract:
Why is this related to cyber?