Simply by using the phone's GPS and sending all messages to a centralized server... | Hacker News

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		Faaak on Oct 27, 2016 \| parent \| context \| favorite \| on: Show HN: Anonymous messaging with a 1km radius Simply by using the phone's GPS and sending all messages to a centralized server which then broadcasts it to the "in the area" participants.

Xeoncross on Oct 28, 2016 [–]

So they use paid cellar data then and it's not really limited to location other than the app enforces this.

Much less interesting now compared to actual proximity apps.

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