{"type":"rich","version":"1.0","title":"carlliwe wrote","author_name":"carlliwe (npub130…x2u7x)","author_url":"https://yabu.me/npub1300ygjwr90lk380ejakcv3g6624yzjzvh9sz3c302tnntxgwe2tsyx2u7x","provider_name":"njump","provider_url":"https://yabu.me","html":"Good. I am have built several tracking applications based on GPS and Rfid so I am familiar with the concept of tracking. But please explain the concept of events."}