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.

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.

Obviously not unhackable and often outdated as people move around, but I always thought phone number area codes were a quick and dirty way to establish or roughly segment people by location.

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

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?

That seems a little excessive for an app like this. The only way I know of that users can fake their location is with a rooted device. I check for rooted devices in the app though so locations can't be spoofed.

> Send them a secret code on a piece of paper in the US mail to their physical address.

Many people will refuse, on principle, to provide this information to any company, unless perhaps it's for home delivery of some good.

It's hard to fake a reputation score. If someone is providing services in an area, they aren't going to start faking a location, and if they do they won't gain any reputation.

But location is already baked into many social media apps anyway, though. https://gemini.google.com/share/68d4fd324d94 ...that'd be the real issue here, perhaps.

Locally produced food is the important one, going forward. It can be much cheaper living away from a city, yet people still want their services. They want to know where the best place to live is.. even to the nearest mile for walking reasons. They want to know where a doctor is, if the nearest hospital is over an hour's drive away. Also language.. how can digital nomads move about and find same-language speakers.

What's wrong with Google maps for this type of stuff? Is there a competitor with downloadable data? What if a war breaks out in your region or the internet goes out or is inaccessible. Need offline data. What happens if service providers don't trust users enough to want to share their data?

A good idea would be for people to take photos of their local community board and share that, so long as the next Pol Pot doesn't see it as well.

Another interesting use-case will be listings of locally tokenized assets. If I need access to a vacuum cleaner or power tools, who would have those nearby? Who has farm land for my heirloom seeds? Where can I buy dairy from pure, healthy livestock? Tokenized assets I expect to eventually grow in size as inequality becomes more K-shaped. People will start selling off these things to the ones with the gold or at least be more willing to rent their stuff out. People are being increasingly homogenized physically, mentally and financially. Location is one of the last areas of differentiation ... and targeting.

Disagree, it's very easy to temporarily forward USPS mail for a specific name from one address to another, and the sender has no idea.

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

Interesting. I've never seen this app before. Ya, still not completely the same concept though. It's using proximity.

Jodel seemed to hurt itself badly with unskippable video ads, at least within the local community I am in that used to have a niche group of users.

Similarly, in the US YikYak was also popular at colleges but killed itself by forcing user accounts instead of full anonymity.

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

>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 agree with you personally... But at this point it is clear the answer is "everyone". The average consumer is not using a desktop for personal computing daily, just work.

I'm not sure if the concept is really for a single user. It's more like you get to connect with people within geographically-defined perimeters.

Nice. It's definitely a similar concept, just no geofences.

Places where you have to use your real name, like Facebook, are typically more toxic

Only for neighborhoods. What if you want to connect with people in a park?