https://old.reddit.com/r/RTLSDR/comments/1jsr9jv/eavesdropping_on_smartphone_1356mhz_nfc_polling/
From a privacy or signals intelligence perspective, that’s quite interesting. If someone is monitoring the airwaves, they might be able to:
From a privacy or signals intelligence perspective, that’s quite interesting. If someone is monitoring the airwaves, they might be able to:
- Detect that someone is present nearby.
- Identify what phone brand or OS they’re using (based on signature patterns, as shown on the picture).
- Infer that the person is actively using their phone — e.g., just turned the screen on.