Hacker News Reader

Yes my concern is about how casual you sound about tracking millions of GPS locations.

By user consent you mean someone clicked a button without thinking to get to the app ?

Here are some examples where user consent is undisputed: ride hailing, bicycle rental, street navigation, running/biking/sailing contests, location-sensitive searches. These are the kinds of applications for which Hazelcast Jet offers easy scaling into millions of users.

Reply on news.ycombinator.com