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Case Study

Experiment Proceudre

• Step 1. A user sits in front of a desk.
• Step 2. The user types a PIN '06107' on an iPhone 11, using a pointing finger.
• Step 3. An attacker collects CSI while the user is typing the PIN.
• Step 4. The attacker infers the typed PIN utilizing the observed spatiotemporal property.

Requirements

• MATLAB 2021 or higher
• Optional: MATLAB Parllel Computing Toolbox for faster processing

Codes Utilized for the Experiment

• Collect typing CSI using two USRPs (one TX, one RX)
• [Download]
• Pre-process and plot the collected CSI
• [Download]
• Obtain single-keystroke waveforms by performing segmentation
• [Download]
• Extract spatoptemporal feature vector
• [Download]
• Launch WINK to obtain candidate PINs
• [Download]

Results

• Figure 6 in the paper presents the raw CSI and the processed CSI with the identified single-keystroke waveforms.