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Show HN: A geofence-based social network app 6 years in development

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Re: Show HN: A geofence-based social network app 6 years in development

#11

Why 6 years?

It started with an idea to allow users to connect within polygon geofences anywhere on earth. Getting this system to work on Android with all the backend code takes a lot of time. The system itself loads polygon geofences 180° E and W longitude and 90° N and S latitude. And it uses perimeter-based loading system that crosses the antimeridian, equator and north and south poles.

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Re: Show HN: A geofence-based social network app 6 years in development

#12

Reminds me of Jodel ( https://jodel.com/ ), an app originally focused on students. It lost quite some activity in the last decade though, gaining fewer users than it loses.

I can no longer install Jodel, says my device is not compatible (GrapheneOS on Pixel 9).

Re: Show HN: A geofence-based social network app 6 years in development

#13
post #9

There's so many ways to fake your location data. There's one way that you can't really fake: Send them a secret code on a piece of paper in the US mail to their physical address. NextDoor used to do this at one point.

I worked on a location-based app a few years ago and this was the exact validation method we used (after having learned about it from using NextDoor). It’s incredibly slow and tedious though. We abandoned the app for other reasons but I always wondered how one could continued to manage this approach once network effects kick in and the app really starts to grow.

I think it's a neat service layer: and infra layer that attests to people's addresses -- to break it you need to intercept mail, which is a federal offence in most states. So it piggybacks on assurances of states, even while being nonstate.

In an experimental identity system I prototyped as a civic tech project[1], I paired this with scraping a government "voter registration check" form and comparing against, and it was a two-fold guarantee: someone had to either submit false info to the voter registry or intercept mail. In theory it was very cheap to get very high assurances, for only the cost of a postcard API per user

[1]: https://github.com/patcon/id.c4nada.ca?tab=readme-ov-file#ab...

Re: Show HN: A geofence-based social network app 6 years in development

#14

There's so many ways to fake your location data. There's one way that you can't really fake: Send them a secret code on a piece of paper in the US mail to their physical address. NextDoor used to do this at one point.

Obviously not unhackable and often outdated as people move around, but I always thought phone number area codes were a quick and dirty way to establish or roughly segment people by location.

Re: Show HN: A geofence-based social network app 6 years in development

#15

There's so many ways to fake your location data. There's one way that you can't really fake: Send them a secret code on a piece of paper in the US mail to their physical address. NextDoor used to do this at one point.

How does this work if you don't get mail service at your physical address? (PO box service only)

Re: Show HN: A geofence-based social network app 6 years in development

#16

There's so many ways to fake your location data. There's one way that you can't really fake: Send them a secret code on a piece of paper in the US mail to their physical address. NextDoor used to do this at one point.

At the start, getting users is the first problem. No one is going to bother scamming your app if there is no one there.

Then once people exploit the app, that doesn't mean they wont add value (e.g. contribute positive content). Maybe they are just a high school kid that wants to talk to his friends in his last town?

Once you have users, then there will be other easy signals to detect: Is the person teleporting? Do they hit rate limits freq? Is their GPS location the exact 'center' of the city? Is there GPS a nice pretty number? Does their GPS location never move?

Re: Show HN: A geofence-based social network app 6 years in development

#19
post #17

No web version? No sale. WTF is wrong with these social apps!?!? Who wants to chat on a tiny screen when they have a computer available. Especially for local apps that function only when you're home.

I mean, every phone has a camera built-in and you don't have to worry about drivers or anything like that.

Re: Show HN: A geofence-based social network app 6 years in development

#20

Let me start by saying that I really like this idea. Obviously social apps like this are faced with a chicken-and-egg dilemma of how to acquire users. I'm no marketer, so I don't have any suggestions on how to solve this one. For myself, I avoid non-free/open-source programs in general, but especially chat apps. I think that especially the programs we rely on to communicate should at least be transparent on the clien…

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