HN Reader

Does it do it lockdown mode too?

From article: "Then, when the screen turns off again (either manually or via timeout), another signal is sent, just 1 ping this time."

Nice.

Bluetooth already broadcasts and has a UID, I have used this a few times in books as plot-outline to identify an antagonist, and I now wonder if NFC has a similar UID It would be interesting to decode the data and see.

Very interesting!

Can we use this to find people stuck in Earthquake rubble?

one of the things I miss in iOS coming from Android is to be able to easily disable NFC or location :/

That man is doing nfc spectrum analysis during an air raid.

I hope to someday acquire this amount of focus and dedication.

Time to start lining the walls with lead to block signal leak. New building code, when?

You know its interesting to know that the people that are in ICE are not smart/competent enough to make uses of these things to detect people and I dont think anything is going to change in the next 3-4 years, its actually bizarre.

This is surprising and cool. What's the explanation for why there are NFC transmissions on unlock or wake?

Last time I checked, NFC has a range of 3 centimeters...

Edit: can't reproduce this with my android phone, sitting 6ft away from my SDR.

> tracking occupancy patterns, correlating signal presence with known devices, identifying sleep cycles

Wait til you find out about Wifi and GSM!