The inventors of bluetooth say there could be problems using their tech for coronavirus contact tracing (Q4611)
Revision as of 21:58, 14 May 2020 by Genferei (talk | contribs) (Created claim: Property:P203: 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))
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
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paper published in May 2020
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Statements
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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