{"type":"rich","version":"1.0","author_name":"npub17ty4mumkv43w8wtt0xsz2jypck0gvw0j8xrcg6tpea25z2nh7meqf4qgyd","author_url":"https://nostr.ae/npub17ty4mumkv43w8wtt0xsz2jypck0gvw0j8xrcg6tpea25z2nh7meqf4qgyd","provider_name":"njump","provider_url":"https://nostr.ae","html":"📅 Original date posted:2015-02-05\n📝 Original message:BIP70 requests can be sent over bluetooth as well, as can transactions.\nBitcoin Wallet can already send money even when offline by doing this. It's\ntransparent to the user. I mean original Bluetooth in this context - BLE\nhas incredibly tight data constraints and isn't really meant for data\ntransfer.\n\nYes Android Beam has a pretty stupid UI. You can actually tap the devices,\ntake them away and then press, but that's not obvious at all. There have\nbeen new APIs added in recent releases that give more control over this, so\nit's possible we can revisit things and make the UI better these days.\n\nThe donation to live performer example is good - there's no issue of\naccidentally paying for someone else in this context as there's only one\nrecipient, but many senders.\n\nThe issue of confused payments remains in other situations though.\n\nFor the coffee shop use case, it'd be nicer (I think) if we aim for a\nSquare-style UI where the device broadcasts a (link to) a photo of the user\ncombined with a bluetooth MAC. Then the merchant tablet can show faces of\npeople in the shop, and can push a payment request to the users device.\nThat device can then buzz the user, show a confirmation screen, put\nsomething on their smart watch etc or just auto-authorise the payment\nbecause the BIP70 signature is from a trusted merchant. User never even\nneeds to touch their phone at all.\n\nOn Thu, Feb 5, 2015 at 9:06 PM, Paul Puey \u003cpaul at airbitz.co\u003e wrote:\n\n\u003e The BIP70 protocol would preclude individuals from utilizing the P2P\n\u003e transfer spec. It would also require that a Sender have internet\n\u003e connectivity to get the payment protocol info. BLE could enable payment w/o\n\u003e internet by first transferring the URI to from Recipient to Sender. Then in\n\u003e the future, we could sign a Tx and send it over BLE back to the recipient\n\u003e (who would still need internet to verify the Tx). This is an important use\n\u003e case for areas with poor 3G/4G connectivity as I've experience myself.\n\u003e\n\u003e Also, due to Android issues, NFC is incredibly clunky. The URI Sender is\n\u003e required to tap the screen *while* the two phones are in contact. We\n\u003e support NFC the same way Bitcoin Wallet does, but unless the payment\n\u003e recipient has a custom Android device (which a merchant might) then the\n\u003e usage model is worse than scanning a QR code. BLE also allows people to pay\n\u003e at a distance such as for a donation to a live performer. We'll look at\n\u003e adding this to the Motivation section.\n\u003e\n\u003e [image: logo]\n\u003e *Paul Puey* CEO / Co-Founder, Airbitz Inc\n\u003e +1-619-850-8624 | http://airbitz.co | San Diego\n\u003e \u003chttp://facebook.com/airbitz\u003e  \u003chttp://twitter.com/airbitz\u003e\n\u003e \u003chttps://plus.google.com/118173667510609425617\u003e\n\u003e \u003chttps://go.airbitz.co/comments/feed/\u003e  \u003chttp://linkedin.com/in/paulpuey\u003e\n\u003e \u003chttps://angel.co/paul-puey\u003e\n\u003e *DOWNLOAD THE AIRBITZ WALLET:*\n\u003e   \u003chttps://play.google.com/store/apps/details?id=com.airbitz\u003e\n\u003e \u003chttps://itunes.apple.com/us/app/airbitz/id843536046\u003e\n\u003e\n\u003e\n\u003e From: Andreas Schildbach \u003candreas at sc...\u003e - 2015-02-05 13:47:04\n\u003e\n\u003e Thanks Paul, for writing up your protocol!\n\u003e\n\u003e First thoughts:\n\u003e\n\u003e For a BIP standard, I think we should skip \"bitcoin:\" URIs entirely and\n\u003e publish BIP70 payment requests instead. URIs mainly stick around because\n\u003e of QR codes limited capacity. BIP70 would partly address the \"copycat\"\n\u003e problem by signing payment requests.\n\u003e\n\u003e In your Motivation section, I miss some words about NFC. NFC already\n\u003e addresses all of the usability issues mentioned and is supported by\n\u003e mobile wallets since 2011. That doesn't mean your method doesn't make\n\u003e sense in some situations, but I think it should be explained why to\n\u003e prefer broadcasting payment requests over picking them up via near field\n\u003e radio.\n\u003e\n\u003e\n\u003e\n\u003e\n\u003e ------------------------------------------------------------------------------\n\u003e Dive into the World of Parallel Programming. The Go Parallel Website,\n\u003e sponsored by Intel and developed in partnership with Slashdot Media, is\n\u003e your\n\u003e hub for all things parallel software development, from weekly thought\n\u003e leadership blogs to news, videos, case studies, tutorials and more. Take a\n\u003e look and join the conversation now. http://goparallel.sourceforge.net/\n\u003e _______________________________________________\n\u003e Bitcoin-development mailing list\n\u003e Bitcoin-development at lists.sourceforge.net\n\u003e https://lists.sourceforge.net/lists/listinfo/bitcoin-development\n\u003e\n\u003e\n-------------- next part --------------\nAn HTML attachment was scrubbed...\nURL: \u003chttp://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20150205/806f0139/attachment.html\u003e"}