The inventors of bluetooth say there could be problems using their tech for coronavirus contact tracing (Q4611)

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paper published in May 2020
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The inventors of bluetooth say there could be problems using their tech for coronavirus contact tracing
paper published in May 2020

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    5 May 2020
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    In other words, Bluetooth’s inaccuracy may not be a problem for typical applications (connecting to that friend’s speaker, for example), but certainly could be for purposes of determining exposure to a pathogen.
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    In addition to RSSI uncertainty, you will have the path loss variation. If there is an obstacle, like a human body, between your BLE device and the detected one, there may be some 70dB of attenuation of the signal at 1m (3ft; e.g. in a crowd) but in free space this may well correspond to 10m (30ft)
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