Re: Can I make peripheral UUID unique?

Subject: Re: Can I make peripheral UUID unique?
From: András Kövi <email@hidden>
Date: Sun, 29 Dec 2013 01:16:53 +0100

You made me curious so I just tried it. Two iphone 4s' discovering the same peripheral -> different UUIDs in BLExplorer. I may be missing something so I'd be happy if you tried it too.

On the other hand this would invalidate the privacy concerns why the random UUIDs were introduced so I'd be suspicious about such a finding if it happened without any previous announcement.

Best,

Andras

2013/12/29 Khaos Tian <email@hidden>

I think on iOS 7, discoveries peripheral identifier for device will be same across all iOS devices.

Best Wishes,
Tian Zhang

On Dec 28, 2013, at 4:40 AM, Kövi András <email@hidden> wrote:

No. The UUID on the API is always a random value and as such it has no correlation to the peers address. You may use a service UUID scheme to identify without connection. Similar to what beacons do.

Regards Andras
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On Sat, Dec 28, 2013 at 9:22 AM, email@hidden <email@hidden> wrote:

I'm wondering if I set the TxAdd of a BLE device's advertisement packet to 1, which make this device advertise its public address not random address, can I get the same peripheral UUID across different iOS devices?

I want to identify this device, as there's no public API for obtaining the bluetooth address, I want to know if I can identify a BLE device by this way.

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References:
	>Can I make peripheral UUID unique? (From: "email@hidden" <email@hidden>)
	>Re: Can I make peripheral UUID unique? (From: Kövi András <email@hidden>)
	>Re: Can I make peripheral UUID unique? (From: Khaos Tian <email@hidden>)

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