Here is a smart camera that allows you to see whether fish are interested in your bait in real time. The Fishing FanCam broadcasts live video to your iOS or Android smartphone or tablet. You can save video and control the stream using the app. The device has a WiFi signal of 100 meters. It has a built-in microphone too.
The battery life lasts up to 2 hours. You can record video to a Micro SD card. The project is currently on Kickstarter.