Why Ultra-Wide Band enables more Accurate Contact Tracing

A new measurement study released by Prof. Doug Leith and Dr Stephen Farrell, researchers at the CONNECT Centre in the School of Computer Science and Statistics at Trinity College Dublin, confirms that it is likely to be challenging to use Bluetooth to reliably detect when people using contact tracing apps are within 2m of one another.

In an online article published online in May, Prof. Doug Leith said “We found that the strength of the received Bluetooth signal can vary substantially depending on whether people walk side by side or one behind the other, whether they carry their phone in their back or front pocket, where they place it within their handbag and so on”.

“It’s important that contact tracing apps are accurate”.

VisionID offers an accurate safe and secure social distancing solution using Ultra-Wide Band Technology.

But why Ultra-Wide Band?

  • Bluetooth may be as accurate as 1–2 meters, suitable in some applications but not as accurate as Ultra-Wide Band (UWB).
  • UWB enables real time accurate readings as close as 10–20 cm.
  • Ultra Wideband has a very wide spectrum or frequency (typically 500MHz) compared to BLE (2MHz).
  • UWB measures time it takes signal to travel – the higher frequency enables such accuracy.
  • Superior performance in multipath.
  • The ability to penetrate obstacles.

Learn more about VisionID’s Social Distancing Solution here.

To learn more about the study conducted by Trinity College Dublin click here.

By visionid | Sep 09, 2020 | Blog

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