Topic: [BOUNTY CLOSED] Open Source (CC) Paper Wallet Kit for safe offline coin storage - page 4. (Read 27627 times)

Sorry, it's kind of buried on page 5. Here's the link:

http://m-ato.me/bitcoin/templatepreferredfinal.ai

All these designs look awesome. I am looking forward to voting!

Yes!

Please upload the front picture to http://tricider.com/brainstorming/poxx for VOTING!

Sim, eu vi sua imagem.

Faça upload da imagem para
http://tricider.com/brainstorming/poXx assim que todos podem votar.

Obrigado!

No you are not too late, you have plenty of time until Sunday, (see policy above).

Please, post this on the voting page, not here.

The voting page is at: http://tricider.com/brainstorming/poxx

Thanks!

Hello! Did you see my work?!

   Hallo,
   We hope, we are not too late Our design has microprint, bitcoin logo is pixelized, sacred fractal geometry in background.

 
B.M.Messer

Added 

Timbo, thank you!

Please feel free to add as many (all of them) as you want.

I personally like the slate-grey design a lot too, and I know you had many more. Obviously more designs gives a better chance for winning, which I think it appropriate and in line with the goals of the project (having a broad variety)

Thanks!

Sound great I added my designs templates to the site. Added extra links for all the different colors I made

edit: I have no problem only one design/designer can win the bounty. Just wanted to give the options.

Policy clarification:

I see some designers will be submitting multiple designs. That's GREAT and I want to encourage it.

However, in the service of fairness, I will be awarding each of the two bounties to a different designer. What this means, is if one designer wins 1st, 2nd, 3rd and 4th place for their designs, then the bounty will go to the 1st and 5th designs (two different designers).

I am open to alternative suggestions.

ONE DAY to go.

As I promised in the beginning of this project, the choice of the bounty design will be open to the community at large. I will advertise for the vote here and on reddit.

I will be using an online voting service to handle the public vote. You can see the design submissions here:

http://tricider.com/brainstorming/poxx

If you are a designer and want to participate in the vote, please submit your design by going to the link above, "Add Idea", upload an image and description with your name/nickname.

By submitting your design you agree for it to be released under CC-BY-SA, upon payment of the bounty. Any designs not paid will remain the property of the designers, though I would encourage sharing regardless.

Submissions must be complete and final before end of day Sunday. If it still says "Sunday" in whatever timezone, you can submit.

On Monday I will post the link more broadly and ask for votes. When the vote ends, the winning design gets 2.5BTC. The second design gets 2.5 BTC. I pick one for production and this bounty is over.

I reserve the right to revise, extend or cancel the vote if I see manipulation, double voting or other problems. I reserve the right to select a different design for the print production run that I will be paying for, though it is highly unlikely.

Thank you for your participation and amazing support for this project.

Any comments, suggestions or objections, you have ONE day to raise them before this policy is considered final.

Andreas

Again, use better paper.  I use this stuff all the time, it will take inkjet fine and you can then dump water on it and it won't smear.

http://www.waterproofpaper.com/inkjet-paper.shtml

Preliminary liquids report:

Worst damage is done on water soaked, inkjet printed, no sticker, folded over. The background colors bleed into the QR black ink and become a soup.

Least damage is on the water-soaked, laser printed, sticker covered, unfolded notes. They seem completely unaltered (haven't scratched the sticker off yet).

The biggest problem seems to be the color ink from inkjets, especially if two printed faces are touching and get wet (either double-side printing on inkjet or folded notes).

I think that the combination of pre-printed backgrounds, thicker paper, and stickers will eliminate the water problem almost entirely. If the users can use laser instead of inkjet for the QR's the problem drops to zero.

I have applied water to the another set of notes, now the ink has had time to dry, to see if it makes a difference.

Tomorrow I will properly tabulate the results. At this point I think we have about a 5% failure rate (QR is likely unreadable, or difficult to scan) across the entire sample.

Something to keep in mind with respect to water-damaged QR codes:

The human eyes are far better at reading QR codes than virtually any QR code scanner.  The only difference is the human brain lacks the capacity to decode the meaning of the QR code.

If ever you encounter an unreadable QR code, but you can make out which squares are black and white, even if you have to guess on some of them, then you can recover the QR code simply by recreating it manually from a paint program or even a piece of graph paper, and then scanning the result.

QR codes contain redundancy, so they are tolerant of some of the squares being the wrong color, or missing.  If part of the code is hard to read, a good guess never hurts.  The only thing that is critical, is that QR won't be tolerant of problems with alignment, or skipping rows, or losing track of which row/column you're on - the sanctity of the grid, and positioning of things relative to the grid, are critical.

The great light,  liquids and transparency experiment (v.2.0) has begun.

This is all on regular 80mg bright white color laser/copier paper. Cheap and thin. Not the kind of paper we will use for the print production, but the kind most users have at home.

Here's the first set of photos, as a high-res album:

http://imgur.com/a/KOOH6#0


Light Test


The photos were taken from a very close distance, with the notes pinned to a lightbox (CFD light).

As you can see, the security sticker is absolutely opaque, no possible way to see through.












The comparison to the sharpie (black marker pen) is quite interesting. In normal light and with the naked eye, the sharpie was obscuring the QR code and was opaque, no chance of seeing the QR. On the lightbox, the difference in color and shading is so big that the sharpie ink seems almost transparent.










Now looking at the reverse side, we see that the inkjet printer's ink has saturated the paper, and bled through to the other side. Even though the security sticker does not let light through, the ink is reflected from the camera flash, through the paper. With very little image re-touching it would be scannable.










On the laser, there is no visible code.












Conclusion of light test: My opinion on these results is that with a security pattern on the back, a sticker on the QR and thicker paper, we will be able to solve the compromise-with-light problem. The security stickers work exactly as advertised and are light-proof.

Liquid Test


The test involved adding 2 cc of liquid (applied with a syringe, for volume consistency), on each note.

I tested notes with and without the security stickers.
I tested three liquids: 2 cc Water, 2 cc vinegar (acid), 4 cc sports drink (red color dye)
I tested three arrangements: Liquid on the front, liquid on the back, liquid on the front and folded

Here you can see the test-grid, about a minute after I finished applying the liquids from left to right. The left side is completely saturated, the right side is beginning to soak.







Finally, I have kept several sets of "control" notes with and without stickers. Tomorrow I will add water to some, to see if there is a difference in the result if the ink has had time to be fully absorbed, or the sticker has had time to fully bond with the paper.

This will result in 42 combinations (30 now, 12 more tomorrow). I will photograph each note, scan the QRs (or try to) and tabulate and analyze the results, in a couple of days.

Let's see how the various combinations hold up!

It's all good. I didn't take it like that. If the Bitcoin security pattern on the back of the wallet would be sufficient, then I would vote for that. I think it looks a lot nicer and I think people would find it more attractive than simply having a blank back to the note.

I did not mean to sound dismissive, quite the opposite. I think your idea of printing it in front and covering with a printable coating is very good and could be less expensive than the back-printed idea. Your design is fine.

I was aiming to encourage more discussion and research on this. Apologies if it came off sounding otherwise!

Yeah, I was just putting it there for the sake of demonstration. My graphic design skills are lack-luster to say the least. I think Acorn's security background design looks pretty nice. I also don't know much about how well security features work. I just thought these couple ideas might be helpful solutions to the problems that canton brought up.

Our beloved template designer Acorn, has also made a background security pattern that is very cool, using the BTC symbol repeated in different angles. I was planning on printing that on the back side of the paper behind of each QR code, to make it impossible to shine-through.

We could also do it on the front, it would require more stickers.

Let's do more research... this is an exciting idea and development. Cantor brought us a completely new "user problem" which actually can become one of the unique features and benefits of this project.

I slapped this together really quick and dirty.



So we have the design with the security pattern printed on the wallet. They printing companies can hopefully apply the waterproof printing label over that security pattern. Something like this, but probably opaque white to help with future scanning?

The end users can slide these in their inkjets and print away. Then they apply the scratch-off adhesive, which would also add some protection to the private keys.