Here's a blog post I wrote comparing geofencing algorithms one of which leverages s2. https://medium.com/@buckhx/unwinding-uber-s-most-efficient-service-406413c

Here's a blog post I wrote comparing geofencing algorithms one of which leverages s2. https://medium.com/@buckhx/unwinding-uber-s-most-efficient-service-406413c5871d https://medium.com/@buckhx/unwinding-uber-s-most-efficient-s... In practice, we use s2 for in memory location indexing.