Thread

Focus on the "working" part. :)

focus on yourself ;)

u 2 should get a room

I tried zapping this post from cashu.me wallet using nwc but no luck. Things do need to work to be usable.

On android, simple. on iOS, nearly impossible

Why is that for ios?

Touch tips

It is possible but really a marginal iteration that requires a ton of effort. We can solve it today if merchants are willing to buy new hardware, but it doesn’t scale well.

Ah thought it might be. Better to just bypass the tap to pay fiat minefield and get merchants to accept bitcoin directly..

I agree, but we're talking about a point of sale solution. Tap to pay is what people know. Aiming a camera while standing in line weird.

Who says you need to be in a line? Payment systems simply need to need an amount. The QR could be presented at the shelf where the item is. Think future.

What's their effect? Do they scan more reliably and faster or is there some other benefit? Phoenix Wallet for example had a 50% fail rate when we used it to pay at our local Meetup for no apparent reason. Maybe it was the weird light in that bar or some reflections by the bartender's smartphone display... 🤷‍♂️ We couldn't figure it out

mobile phone cameras often don't have enough resolution for the amount of data in a lightning invoice. if the QR is only an LNURL like LUD16 you get less problems.

Switching to a different app on the same phone often worked though. So we swapped to ZEUS or WoS after Phoenix failed and those apps could often fetch the invoice 🤷‍♂️ Maybe Phoenix was just bad 😆

probably depends on the QR code library in use then also

oh yeah, most phones have a good scanner in the phone now. you can scan with the camera, copy, and paste into the lightning wallet and pay that way for this case. but try other LN wallets too, and if you love the one you have, bitch at the devs about the QR reader library.

I have never had issues with phoenix (on iOS) but it could be a camera issue. The scanner devices usually have a cone shape to reduce light falling in. When you turn the phone upside down to show your QR it reduces reflections.

LN terminals should use lightning addresses and require changing to use full onion wrapped invoices. many phone cameras can't capture the QR at high enough resolution. this is a bigger problem in poor countries where phones are often 5+ years old tech

Yes. The problem is not QR codes, it's the huge dynamically changing QRs. Smaller static QRs are a better UX than tap to pay

NY and Boston transit systems are all tap to pay now. Its super convenient.

Well yea I use tap to pay all the time, i mean for btc. Who offers a tap to pay terminal for btc?

They are extremely slow in comparison

But not always convenient. How would the audience donate to speakers on this situation without a qr code? View quoted note →

It's good to create solutions for this where it is possible to use. I think it opens up a series of possibilities if nfc chips are safer and cheaper than cameras.

They're one-way. Don't worry about slow.

LNURL QR codes can be used both to deposit or withdraw

Lol grow some brains.

I would zap you but you don't have a LN address 😔