Show HN: Photo Realistic QR-Codes • Hacker News Board

Re: Show HN: Photo Realistic QR-Codes

#31

Post by irjustin » Fri, Aug 14, 2020, 4:38 PM UTC

Wow this is freaking cool! All worked for me in the iphone x

Re: Show HN: Photo Realistic QR-Codes

#32

Post by pickledcods » Fri, Aug 14, 2020, 4:56 PM UTC

Please be patient, I'm adding extra workers to the instance. Old instance died because it exceeded limits.

Re: Show HN: Photo Realistic QR-Codes

#33

Post by social_quotient » Fri, Aug 14, 2020, 5:09 PM UTC

AriaMinaei wrote: post #5

Slightly OT, but when migrating data between iPhones, the old iPhone displays an animated point cloud that appears to function like a QR code. You scan it with the new phone, and your data starts to migrate locally through Bluetooth. Other than aesthetics, what are the advantages of the point cloud? Higher bandwidth? Also, if you were to transfer 100s of megabytes of data from device A to B, using A's display and B's…

Here is a good demo of a streaming qr solution. Not ours but a good demo of the concept.

https://youtu.be/_0djJ1aVEXs

We use a similar method for offline wallet transfers of private crypto keys. I’ll note a couple things. Keep the frame simple and not too dense. Be careful on ecc settings. Higher res camera androids to be slower in our testing. Be ready to loop the series to catch missed frames. Gives your frames and order context. If it’s really sensitive dat, encrypt it before encoding you QR. assume the video can be stolen from a camera. Inject noisy frames To help obfuscate.

Re: Show HN: Photo Realistic QR-Codes

#34

Post by deathanatos » Fri, Aug 14, 2020, 5:18 PM UTC

pickledcods wrote: post #32

Please be patient, I'm adding extra workers to the instance. Old instance died because it exceeded limits.

I'm a bit curious… how much traffic is the front page of HN?

(I was thinking of posting a "Show HN" at some point, but I just do everything on my own machines. Not sure how much traffic my desktop would handle before figuratively melting. The nice thing about my Show HN is that it would be a static HTML page, so that's at least easier; yours is necessarily dynamic.)

Re: Show HN: Photo Realistic QR-Codes

#35

Post by AlexITC » Fri, Aug 14, 2020, 5:32 PM UTC

deathanatos wrote: post #34

pickledcods wrote: post #32

Please be patient, I'm adding extra workers to the instance. Old instance died because it exceeded limits.

I'm a bit curious… how much traffic is the front page of HN? (I was thinking of posting a "Show HN" at some point, but I just do everything on my own machines. Not sure how much traffic my desktop would handle before figuratively melting. The nice thing about my Show HN is that it would be a static HTML page, so that's at least easier; yours is necessarily dynamic.)

I have been in the front-page twice, getting around 5k-10k visitors in the same day, which should give you an idea.

Re: Show HN: Photo Realistic QR-Codes

#36

Post by chronomex » Fri, Aug 14, 2020, 5:33 PM UTC

Related work elsewhere (2012): https://research.swtch.com/qart

Re: Show HN: Photo Realistic QR-Codes

#37

Post by jermaustin1 » Fri, Aug 14, 2020, 5:40 PM UTC

AlexITC wrote: post #35

deathanatos wrote: post #34

Earlier quoted context omitted.

I'm a bit curious… how much traffic is the front page of HN? (I was thinking of posting a "Show HN" at some point, but I just do everything on my own machines. Not sure how much traffic my desktop would handle before figuratively melting. The nice thing about my Show HN is that it would be a static HTML page, so that's at least easier; yours is necessarily dynamic.)

I have been in the front-page twice, getting around 5k-10k visitors in the same day, which should give you an idea.

That seems to be what I typically see as well. I’ve seen up to 80k views over the course of a day.

Re: Show HN: Photo Realistic QR-Codes

#38

Post by deninho » Fri, Aug 14, 2020, 5:42 PM UTC

wiradikusuma wrote: post #27

The default Camera App in Google Pixel can auto-recognize QR codes, but unfortunately it doesnt work with these. Meanwhile, a dedicated QR scanner (such as built-in in iPhne) works.

I use gcam on a xiaomi redmi note 7 and it recognised everything except for the animated ones.

Re: Show HN: Photo Realistic QR-Codes

#39

Post by frankjr » Fri, Aug 14, 2020, 5:46 PM UTC

pickledcods wrote: post #32

Please be patient, I'm adding extra workers to the instance. Old instance died because it exceeded limits.

You can use GitHub Pages for free. No need to pay for AWS.

https://pages.github.com/

Re: Show HN: Photo Realistic QR-Codes

#40

Post by Majromax » Fri, Aug 14, 2020, 6:00 PM UTC

alsdkfjkqjwer wrote: post #26

QR should look MORE like QR, and always include an URL next to it. If you display a QR Code with some url, and fail to show a shortened url next to it for people to type instead of scanning, you either fail basic common sense tests, or are intentionally being an asshat.

... or the QR code isn't meant exclusively for direct human consumption?

A QR code is quite information-dense. With even the highest error-correction rates, a 53x53 QR code will store 100 bytes of information (https://www.qrcode.com/en/about/version.html). That's more than you can replicate in a URL intended for typing.

For the case of the 'Show HN' here, think of semi-automatic uses of the QR code that still use the provided aesthetic potential, such as inventory-control stickers that look like the owning organization's logo.