Have a look at my post "Payment Protocol for Face-to-face payments". In short: I implemented BIP70 using combinations of either QR-code or NFC plus Bluetooth. You can download a working preview app from:
https://github.com/schildbach/bitcoin-wallet/releases/tag/v3.30-bitcoinj0.11 On 02/03/2014 09:30 PM, Tim Tuxworth Founder Go-taxi.biz wrote: > Is BIP70 limited to http only? > > What about face to face scenarios, or realtime like ticket sales or > gambling, and socket and/or bluetooth type connections? > > Tim Tuxworth > Founder Go-Taxi.biz > > > -------- Original message -------- > From: Christophe Biocca > Date:2014/02/03 10:49 AM (GMT-08:00) > To: Tim Tuxworth > Cc: bitcoin-development@lists.sourceforge.net > Subject: Re: [Bitcoin-development] BIP70: Canceling Payments > > Over http, the merchant doesn't have the ability to reach out to the > consumer's bitcoin wallet on their own. So sending "Cancel Payment > Request" to the user is impossible. > > If the customer doesn't want to send, nothing ever needs to happen. So > sending a "Reject Payment Request" to the merchant is useless. > > The unhappy path scenario with Payment Requests (customer paid, but > for whatever reason that payment is no longer valid) can be simply > solved in 1 of 2 ways: > > If the merchant realizes the mistake, they can refund the money. > If the customer realizes the problem, they can contact the merchant, > provide the signed request, and ask the merchant to return the funds. > > What isn't covered? > > On Mon, Feb 3, 2014 at 1:08 PM, Tim Tuxworth <t...@go-taxi.biz> wrote: >> The process described in BIP70 might be ok for a simple "happy path" >> scenario, but what if things don't work so smoothly. I'm not talking >> here about technical issues, but _very common_ business scenarios such as: >> >> e.g. Merchant cancels request before payment is sent, such as when:- >> - the merchant realizes that they charged the wrong amount >> - the merchant realizes that they send the payment request to the wrong >> customer >> ... >> >> e.g. the Merchant or Customer decides to cancel the transaction after >> the payment request is sent because:- >> - the customer decides to pay by some other mechanism like cash or >> credit/debit >> - the customer doesn't have sufficient funds and decides not to purchase >> - the customer changes their mind and decides not to purchase >> ... >> >> It strikes me that a "Cancel Payment Request" message is required >> and a "Reject Payment Request" may also be required (or maybe use the >> same message for both). >> >> Tim Tuxworth >> >> > ------------------------------------------------------------------------------ >> Managing the Performance of Cloud-Based Applications >> Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. >> Read the Whitepaper. >> > http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk >> _______________________________________________ >> Bitcoin-development mailing list >> Bitcoin-development@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/bitcoin-development > > > ------------------------------------------------------------------------------ > Managing the Performance of Cloud-Based Applications > Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. > Read the Whitepaper. > http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk > > > > _______________________________________________ > Bitcoin-development mailing list > Bitcoin-development@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bitcoin-development > ------------------------------------------------------------------------------ Managing the Performance of Cloud-Based Applications Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. Read the Whitepaper. http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk _______________________________________________ Bitcoin-development mailing list Bitcoin-development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bitcoin-development
