If run on an Android phone it can bitcoin qr code js QR codes containing addreses to send Bitcoins to! You can also use Apache to serve js-remote. You don’t have to worry about your keyfile being in the same directory as js-remote. You can encode a Bitcoin address, an amount, and optionally your name and a comment.
Transferring bitcoin: URIs to mobile devices is possible using QR codes. Generate and download Bitcoin QR code. 10, Chrome, Firefox, Safari, Opera, Mobile Safari, Android, Windows Mobile, ETC. M9 1a8 8 0 1 0 0 16A8 8 0 0 0 9 1zm. What are QR codes and How do you use them as request payment from Wallet? How do you use the QR code for payment function on the wallet ?
When would you use it ? With Bitcoin you generally scan the code with your smartphone app to know to which address to send the bitcoins. When using bitcoin to pay at the point-of-sale or for a face-to-face transaction, there is the problem of how to communicate the Bitcoin address to be paid in a way that the person paying can use. A bitcoin address is just data, but it is between 27 and 34 characters so that is way to much info to expect the person paying to have to manually type in.
A QR code can easily represent this amount of data in a machine-readable manner and do so reliably. The QR code can contain other information as well — such as an amount and a message and other fields as well — thanks to a URI scheme for Bitcoin. QR code with the Bitcoin address for the transaction, and then for the person paying to scan that QR code to obtain the bitcoin address. A mobile app called Barcode scanner from ZXing is the most widely used app on Android for this. If you are paying using the Blockchain for Android mobile app, then that app will let you touch the QR code button to launch the Barcode scanner app. The person paying then hits send and the bitcoin transaction gets created and broadcasted by the mobile app. QR code for the customer to send payment to which occurs in just one step.
For those wishing to create a QR code manually can do so using a web-based service such as Wolfram Alpha or several other methods. This does introduce a vulnerability however in that the provider of the QR code could detect that this is a Bitcoin address and maliciously interject another address that the provider controls — thus directing the consumer to pay the wrong address. As of November 2013, Bitcoin-qt generates a QR code. Click the Addresses button at the top of the window, highlight the wallet address you want, and then click the “Show QR Code” button at the bottom of the window. Add a message, if you want, or not, and then click the “Save As” button. It will be saved as a PNG image file. Nowadays pretty much every device has a camera built in so it is much easier to scan the QR code rather than typing very long Bitcoin account address.
If you have wallet in your mobile phone and you want to send money to someone he can email you the QR code and you will be able to scan it quickly with your phone and send the money. Without that you would have to type in on your phone the whole Bitcoin address. The same goes to receiving Bitcoins, you can easily send QR code to someone. If you make face to face transactions with Bitcoin you can exchange Bitcoin addresses just in few seconds, without typing. Good answer, but how would you produce the QR code in the first place?
Not the answer you’re looking for? What additional benefits can QR codes bring to Bitcoin applications beyond payment requests? Can a wallet allow you to receive Bitcoins from the same wallet you send them from? What wallet should I use to collect the mining payout from multiple machines? How can I request payment to a set of addresses? Whats the use of QR-codes during wallet to wallet transfer? How do I transfer BTC from my Coinbase account to my Android wallet?
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