We can use user's longitude and latitude to determine the point of interest (POIs) around the user. Here are the steps:
<ol>
<li>Get the users' long/lat
</li>
<li>Compute it's geohash
</li>
<li>Determine what prefix you want to use: The longer the prefix, the closer together the points
</li>
<li>Match prefix with geohashes of POIs
</li>
<li>Optimize count of POIs
<ol>
<li>Reduce # of prefix match if you want more points
</li>
<li>Increase # of prefix match if you want less points
</li>
</ol>
</li>
</ol>

We can use user's longitude and latitude to determine the point of interest (POIs) around the user. Here are the steps:

1. Get the users' long/lat
    
2. Compute it's geohash
    
3. Determine what prefix you want to use: The longer the prefix, the closer together the points
    
4. Match prefix with geohashes of POIs
    
5. Optimize count of POIs
    
    1. Reduce # of prefix match if you want more points
        
    2. Increase # of prefix match if you want less points

Geohashing Algorithm

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