WiFi devices recognize keystrokes with 97.5% accuracy
Original title: Recognizing Keystrokes Using WiFi Devices
WiKey system uses WiFi channel state information to detect and classify typed keys on standard keyboards at high accuracy.
The WiKey system implemented with a TP-Link TL-WR1043ND router and Lenovo X200 laptop recognizes keystrokes by analyzing unique CSI-waveform patterns from finger movements. It achieves over 97.5% detection rate and 96.4% single-key recognition accuracy. Real-world tests show 93.5% accuracy recognizing continuous sentences and over 85% accuracy for words inside sentences.
- 97.5% keystroke detection rate
- 96.4% single-key recognition accuracy
- 93.5% sentence recognition accuracy
- 85% word recognition accuracy
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