AI Smartphone can be guessed by the sound of the finger. May 29: 5:45 on January 29
A study by a group at Shizuoka University found that when inputting characters with a smartphone, analysis of the very slight sound of the screen and the finger hitting the AI with AI can estimate the input characters with high accuracy. The group states that new security measures may be needed.
This was announced by a group of Professor Masakatsu Nishigaki of Shizuoka University at a conference held in Kochi City on the 28th.
In the group, paying attention to the fact that a finger or nail hits the screen and makes a slight sound when entering characters on the smartphone, enter the numbers from "0" to "9" on the actual smartphone 100 times each, I let AI learn the sound that comes out at that time.
Then, after tapping the screen and letting AI analyze which number was input from the sound, it was able to guess the correct number with an accuracy of 95% or more.
According to the group, there is a slight difference in sound quality and reverberation depending on the location of the screen of the smartphone depending on how the internal components are attached, and it is said that AI is presuming the tapped position from the difference.
The group points out that if the technology goes further, it may be possible to read the password of the smartphone from the sound of the input.
Professor Nishigaki commented, "I was not surprised that the sound could just be estimated by tapping the screen, and I was surprised at the results. We evaluated the extent of the risk and examined effective security measures. Need to go on. "