Re-running this post with a few minor updates. Contact tracing apps do not track surface or air contacts across time | Coldstreams Business and Tech Bluetooth-based contact tracing apps are incapable of detecting close contacts across time. Example: Someone sits on a bus or at a coffee shop seat, coughs, and then leaves, 30-60 seconds … Continue reading Contact tracing apps do not track surface or air contacts across time | Coldstreams Business and Tech