8 min read
Nearby peer discovery without GPS using environmental fingerprints
I propose a peer discovery technique to detect nearby devices by comparing similarity in their observed environments, such as WiFi or Bluetooth networks. Using locality-sensitive hashing and private set intersection, peers can compare their environments without disclosing the full details. With sufficient similarity between environments, peers can conclude they are near each other.
locality-sensitive hashingprivate set intersectionlibp2psoftwaregeolocation
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