Frequency, voltage amplitude, and signal-to-noise ratios of scalp-registered brain signals are in the same ranges as the audio signals from piezo devices such as phonograph needles, enabling a 100x cost-reduction by using conventional DSP equipment.
Tag Archives: Cybernetics
Rhythm-Based Security (1987-1988)
In order to secure password protection, even when someone knows the password, I developed an adaptive pattern-match of the rhythm of keystrokes described during the entry of the password. This protection adapts to the evolution of an individual’s unique rhythm in typing. It was implemented successfully in dorm rooms across my campus, though originally inspired [...]
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