@yibob_fu · -1Pt
Saved 2026-05-15 · Posted 2026-03-19 · Status: New
What if everyday objects could talk quietly — without electronics?
SoundOff turns everyday objects into smart sensors using these little metal tags that emit unique ultrasonic fingerprints when touched or moved.
These inaudible signals remain robust even in noisy environments, enabling scalable, privacy-preserving sensing — without batteries or cameras.
From enabling smart environments to supporting independent living for elderly, SoundOff points toward a future where intelligence is encoded directly into the physical world.
Paper details: https://dl.acm.org/doi/10.1145/3770666
@yibo_fu, @vivianhshen, Víctor Riera Naranjo, Bolei Deng, @ata_._1986, @siahman12
#hci #smarthome #georgiatech
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Comments (15)
This is a brilliant idea, although most of the suggested application sounds scarily like means for surveillance
STOP MAKING SURVEILLANCE DEVICES
Will this have an impact on my dog's behavior ?
Wow! This is crazy smart, congrats on the paper!
There has to be a Mossad-type application for this
*Laughs in ultrasonic jammer*
Very nice dude. This can probably be applied to mechanical parts for machines to see exactly which part has failed when it's signature changes. Great fucking use of freq domain here. 🔥🔥🔥🔥
You know where this would work well? Storage bin locations, you only need one microphone in the storage area, each bin gets a unique tag, pings when its taken, microphone logs it, when its returned, pings again and marks it as returned. Saves forgetting to scan in and out, works in an industrial setting, more reliable than ripped barcodes or faulty scanners and you dont need a complex vision system to watch the bins 24/7, il take my consultant fee 😂. I do wonder how many versions you can do before you run out of unique tags but im sure thats in your paper too, good work!
For the open or closed window, is the frequency the same on both upward and downward strikes?
This is really neat. I suggest working with Amazon to have them modify their Echo Dot to detect these pulses and simulate contact closures to trigger Alexa Routines. Their Echo Dot currently uses its own ultrasound to detect a person's presence.
The dogs gonna go nuts... 😂
Brilliant! You have quite the product there, well done! 🙌🔥🙌
This is so cool!!!
Can we use this to compute?
How do you differ if two or more persons using the same kind of tag for example while workout?