How Bluetooth passkey works? If I change the fixed passkey, will it affect the paired devices?
Bluetooth passkey is used in authentication procedure for Bluetooth security purpose. When remote device connects to your computer, he has to offer the same Bluetooth passkey as what you input. If the Bluetooth passkeys from two sides are same, connection can be setup. A paired relationship is established on both sides. There is no need to input passkey for the next time of connection. Any side can delete the paired relationship. Changing fixed passkey will not affect the existed paired relationship.