QR Code Magic

I posted this on Facebook, but I thought I’d share it here, as well. (If this is news to you, you must not be a fan of my page. Go to my page on Facebook and “like” it. Right now. I’ll wait.)

I had the idea of using QR codes in ministry. Those are two dimensional bar codes that can be scanned by smart phones. There are a number of things they can do, but usually they are used to direct the person’s smart phone to go to a web page.

Because they’re still rather novel here in the United States, they have a good possibility of going viral. People should want to show it to their friends, just because it illustrates something “cool” that they can do with their phones.

Concept for evangelistic card with a QR code.
Concept for evangelistic card with a QR code.

I threw together a sample of a possible evangelistic piece. This is just a “proof of concept.” You would want to improve the wording and pretty it up a bit before using it. You would also want to put more work into the web page that the QR code directs people to than I did in my sample. Just remember to keep it simple enough to work on a mobile browser.

Feel free to take this idea and run with it, with or witout using QR codes. A quick Google search will tell you everything you need to know about QR codes. To get you started, here’s a good site for creating QR codes.

If you come up with any good ideas, be sure to share!

Update: There is an error on the image. The first step of the instructions should be “Focus on any red square,” not “any symbol.” (Caine, thanks for pointing out the error!)

3 Replies to “QR Code Magic”

  1. I love this effect, but due to the size of the grid and the nature of the “rules”, there are several possibilities for a failed “prediction.”

    Allow me to explain.

    STEP 1:
    If your spectator chose the symbol on Row 2, Column 4…

    STEP 2:
    Then moved left or right to the nearest gray square (Row 2, Column 3)…

    STEP 3:
    Then moved up or down to the nearest red square (Row 1, Column 3 or Row 3, Column 3)…

    STEP 4:
    Then moved diagonally to the nearest gray square (6 possible combinations)…

    STEP 5:
    Then moved down or right to the nearest red square…

    ERROR:
    Only the final position of Row 2, Column 4 offers the spectator the choice of moving down to a red square and it’s not the red square you want them to have chosen. The other five positions to do not offer a down or right move as there are no red squares to land upon.

    You can find similar errors in this effect when starting with some of the symbols in Row 4 as well.

    To resolve these issues, reduce the matrix from a 4×4 grid to a 3×3 grid then all moves will be possible and achieve the desired outcome.

    Best wishes and a great PoC (Proof of Concept)!

    1. Yes, there is a problem in this version. I thought I had uploaded a correction, but apparently I didn’t.

      The first step in the instructions should say “Focus on any red square,” not “any symbol.”

      Starting from red it should work every time. (I think!)

      -Brad

  2. Also note – the grey square located in row 2, column 2 also presents a problem and will generate a failure in the prediction thereby creating a potential pitfall even in the 3×3 matrix.

    Using the directions indicated, by step 4, the spectator will inadvertantly end up on the same square they started with (Row 2, Column 2) thereby rendering the final step impossible.

    Also, if you are using a 3×3 or a 4×4 grid and the spectator chooses the square in Row 2, Column 2, step 2 becomes impossible as the spectator can not move left or right to the nearest gray square as a gray square does not exist. A slight augmentation of step 2 should read “Move left or right to the nearest gray square. If you chose a gray square and there are no gray squares to the left or right of your chosen square, use the gray square you are on.”

    I’m sure there is a more elegant, and less confusing way to describe this.

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