id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-297835-ukrz8tlv	Leith, Douglas J.	Measurement-based evaluation of Google/Apple Exposure Notification API for proximity detection in a light-rail tram	2020-09-30		.txt	text/plain	5591	264	58	title: Measurement-based evaluation of Google/Apple Exposure Notification API for proximity detection in a light-rail tram Contact tracing apps based on the Google/Apple Exposure Notification (GAEN) API [4] are currently being rolled out across Europe, with apps already deployed in Italy, Switzerland and Germany. We observe that changing the people holding a pair of handsets, with the location of the handsets otherwise remaining unchanged, can cause variations of ±10dB in the attenuation level reported by the GAEN API. To provide baseline data on the radio propagation environment we also used the standard Android Bluetooth LE scanner API to collect measurements of RSSI as the distance was varied between two Google Pixel 2 handsets placed at a height of approximately 0.5m (about the same height as the tram seating) in the centre aisle of the tram carriage.	./cache/cord-297835-ukrz8tlv.txt	./txt/cord-297835-ukrz8tlv.txt