[Bitcoin-development] Proposal for P2P Wireless (Bluetooth LE) transfer of Payment URI

Paul Puey paul at airbitz.co
Thu Feb 5 22:02:54 UTC 2015

The implementation on Airbitz does not encourage or even let a user
broadcast a photo. Just an address prefix and "name/handle". And it's only
broadcast during the Receive request. Not generally while the app is
running although that's up to the implementation.

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*Paul Puey* CEO / Co-Founder, Airbitz Inc
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On Thu, Feb 5, 2015 at 1:19 PM, Brian Hoffman <brianchoffman at gmail.com>

> This sounds horrible. You could basically monitor anyone with a wallet in
> a highly populated area and track them super easily by doing facial
> recognition. Yes you could photograph people but it's way more burdensome.
> Sorry to go off topic a little.
> On Feb 5, 2015, at 3:50 PM, Mike Hearn <mike at plan99.net> wrote:
> I'm imagining myself walking around broadcasting my photo and MAC
>> address while hucksters push payment requests to me for approval
> I hate to break it to you, but you broadcast a photo of your face every
> time you walk outside ;)
> Bluetooth MAC addresses are random, they aren't useful identifiers. If
> someone can see you, a face is a far more uniquely identifying thing than a
> MAC.
> "Payment spam" might be a problem. I can imagine a wallet requiring that
> such requests are signed and then spammers can be blacklisted in the usual
> fashion so they can't push things to your phone anymore. Anyway, a hurdle
> that can be jumped if/when it becomes an issue.
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