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

Eric Voskuil eric at voskuil.org
Thu Feb 5 21:23:48 UTC 2015

Yes, a stellar device for mass surveillance coupled with transaction tainting.


> On Feb 5, 2015, at 1:19 PM, Brian Hoffman <brianchoffman at gmail.com> wrote:
> 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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