First look at Apple/Google contact tracing framework

Post by darkwater » Sat, Apr 11, 2020, 11:00 AM UTC

laggyluke wrote: post #71

antpls wrote: post #66

Earlier quoted context omitted.

> 4) it helps stop others from becoming infected and possibly dying. how is that not a good thing? The virus will always be here, we cannot hide forever, we must find a way to cure it or reduce its biological effect. Once covid19 goes away (if ever), and a new virus appears, NO ONE will have that app turned on, and by then, the new virus will have spread just like covid19. I have a very simple solution to win time :…

> Once covid19 goes away (if ever), and a new virus appears, NO ONE will have that app turned on, and by then, the new virus will have spread just like covid19. Devil's advocate: so why not just keep the app running forever in the background? If there's no virus to report - that's fine. But the moment a new outbreak starts, the data is already there, you just have to report that you're sick.

Post by vermilingua » Sat, Apr 11, 2020, 11:22 AM UTC

fabian2k wrote: post #78

antpls wrote: post #60

Again, this solution _cannot_ work and it is a _threat_ to a permanent loss of privacy. This is like the government and the adtech companies sleeping in the same bed, without any other power opposition in the balance. 1) The "solution" is created by a monopoly of 2 american private corporations. 2) It can only work reliably if everyone wear an (Apple or Android) phone at all time, and consent to give data 3) You are…

From looking at the specification, I don't see any serious loss of privacy there, if this is implemented as stated. 2) You don't need 100%, you only need enough to drop the R0 below 1. You'll likely need a majority of people using this, which is hard enough, but you don't need everyone using it. 3) The apps are not supposed to include every single registered contact, only contacts that are over a bit longer timeframe…

Post by jeremyjh » Sat, Apr 11, 2020, 11:54 AM UTC

sneak wrote: post #49

zeckalpha wrote: post #34

> Published keys are 16 bytes, one for each day. If moderate numbers of smartphone users are infected in any given week, that's 100s of MBs for all phones to DL. Seems like a usecase for bloom filters or k-anonymity.

16 byte keys for a quarter million people are only 4mb per day. We aren’t seeing remotely close to a quarter million infections per day. The data sizes are reasonable, even if you multiply it times n days for the backward tracing. I think his post is a little bit more fearmongering than is necessary.

Post by Dahoon » Sat, Apr 11, 2020, 11:55 AM UTC

adamweld wrote: post #65

antpls wrote: post #60

Again, this solution _cannot_ work and it is a _threat_ to a permanent loss of privacy. This is like the government and the adtech companies sleeping in the same bed, without any other power opposition in the balance. 1) The "solution" is created by a monopoly of 2 american private corporations. 2) It can only work reliably if everyone wear an (Apple or Android) phone at all time, and consent to give data 3) You are…

1) and 2) - the fact that Google and Apple have what is essentially a monopoly on smartphone software is exactly what makes this a good approach. it's the easiest way to reach a high percentage of the population. 3) false positive are a hell of a lot better than having no way to trace back contacts while someone was asymptomatic but contagious. 4) it helps stop others from becoming infected and possibly dying. how is…

Post by kome » Sat, Apr 11, 2020, 12:05 PM UTC