Bluetooth “out of band” (OOB) pairing on iOS?

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挽巷 2021-01-25 00:50

I need to securely paired a bluetooth device to an iOS device, I know that in Bluetooth 4.0 and 4.1 there is three way to do the pairing : Just Works, Passkey Entry and Out Of

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  • 2021-01-25 01:32

    The only available bonding (pairing) method in Core Bluetooth is passkey entry.

    The Apple Watch uses an OOB technique involving an image captured by the phone's camera with a fallback to passkey, but this is not available to other apps.

    If your device has a display and can generate a random passkey then this technique is much the same as OOB in terms of security. If your device doesn't have a display then the security depends on how the passkey is shared (e.g. fixed passkey such as 0000 for all devices, not very secure. Random passkey for each device on a sticker is more secure)

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