What is the difference between pairing with a bluetooth device vs connecting to a bluetooth device?

I am working on a Flutter app that connects to a bluetooth IOT device. I am using the flutter_blue library. This library allows for the scanning of nearby bluetooth devices. Based on that scan you can "connect" to a device. There is no concept of pairing to a device.

From my previous experience using bluetooth on my phone (when connecting to my car and my bluetooth speaker), I have to pair the device at the Android OS.

I am curious, from a high level, what are the differences between pairing a device vs connecting to a device. In addition, more specifically, what is the difference between pairing a device within the OS, vs scanning and connecting to the device from an app?



Read more here: https://stackoverflow.com/questions/65835536/what-is-the-difference-between-pairing-with-a-bluetooth-device-vs-connecting-to

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