You may use your Shrine Sensor for a lot within The Legend of Zelda: Tears of the Kingdom. It allows you to detect whenever Shrines are nearby, and that can be extremely important. It can become the main way you find Shrines and increase your health or stamina.
The Legend Of Zelda: Tears Of The Kingdom - How To Unlock The Sensor+
If you're trying to unlock Sensor+ in Tears of the Kingdom, this guide can help you do it.