Socket.IO Websockets

Implement Socket.IO client on your platform and listen to this URL:

Production - https://api.sensepass.com?id=id_<Device_Id>

Sandbox - https://api.sandbox.sensepass.com?id=id_<Device_Id>

Listen to "message" event to get notifcations about the transaction for a specific device.

Read here about Socket.IO: https://socket.io/docs/