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The “security” came from the fact it was tuned to receive a specific frequency. Earlier radios were not very selective on which frequencies they would accept.
by jdsully 7y ago
The “security” came from the fact it was tuned to receive a specific frequency. Earlier radios were not very selective on which frequencies they would accept.
The main benefit was not actually security but a reduction in congestion. Spewing interference out randomly is not an efficient use of airwaves.
- jefftk 7y agoExcept that the one in the demo wasn't, enabling the hack: It was discovered that the receiver that Fleming had been using was not, in the phrasing of the time, syntonic. It wasn’t tuned to a specific frequency, excluding all others, because a syntonic receiver would have been too large to use in the demo.