I'm not sure if this is the best place but I don't know any Xamarin devs personally so I thought I might find someone able to help me here.
The idea is simple: use BLE advertisement data to record social interaction on a smartphone (without storing the data in the cloud). I think I know how to do it but it will take me too long as I am not an experienced Xamarin dev. I know C# and have experience with cloud, IoT and BLE.
This is a non commercial project.
I am based in Sydney at the moment.