Abstract
Internal microphone captured and
remembered the delay time or
frequency reflected from dominate
user.
Creative Commons License
This work is licensed under a Creative Commons Attribution-Share Alike 4.0 License.
Recommended Citation
INC, HP, "SCREEN SECURITY BY USING ULTRASONIC ACOUSTIC METHOD", Technical Disclosure Commons, (March 18, 2019)
https://www.tdcommons.org/dpubs_series/2037
COinS