3 ms·
Could very well not tx until it receives a wake up message.
by iancarroll 8y ago
Could very well not tx until it receives a wake up message.
- angry_octet 8y agoTrue. But you could transmit a variety of RF frequencies at the device and try to detect resonance in the antenna. Unfortunately WiFi uses direct conversion rather than IF demodulation, but there is no reason to assume a covert transmitter would use wifi, which is easily spotted by off the shelf equipment. https://youtu.be/ZxyU_1xUOWc https://youtu.be/ZxyU_1xUOWc Micropatch antennas are super hard to detect, even with x-ray, and newer types even harder. https://www.nature.com/articles/s41467-017-00343-8 https://www.nature.com/articles/s41467-017-00343-8