The reason it’s not simply a numeric sequence, is because the makers of the CueCat didn’t want their toy to be used for reasons other than its intended purposes. Whatever scrambling is being done, it has to be done after the conversion from base coding to 8-bit data. Tags driver , hid , kernel , usb Thread Tools. The first and usually longest section is your unique serial number, assigned to your CueCat. I bought a CueCat and when I went to register the cat, it says the company is out of business. Now it’s time to do some more experimentation. What problems am I facing if I choose to use it instead of the more general hid driver?
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Mine hasn’t even been opened.
We also see this in the first field, which suggests that the field also contains zeros in it — for this particular wand, there appears to be at least nine leading zeros. Here is what we get:.
The proof of the concept is to code up a decoder and try it.
CueCat driver for the Linux kernel
It is a Code encoding of the author’s name. Using any one of those, we now generate a Code 39 3-of-9 barcode in which we code a string of zeros, and scan it to obtain this result:. How much would you expect to pay for one of these cool toys?
To decode the third string, use this chart as a reference:. This problem has been fixed in 1. The trailing null is an artifact of kegnel program that signifies that the “extra” data at the end of the barcode consisted of nulls, and therefore is of no consequence.
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I found a bug! Whatever scrambling is being done, it has to be done ccuecat the conversion from base coding to 8-bit data. I will get to work on a 2. Basically, with the new input API in 2.
The program can run different programs based on different types of barcodes read, or the particular reader that has been used to read a barcode. What do you do with your new found toy? The first column of data is constant.
The following table shows the correspondence between the ISBN numbers and the scan codes in the third column:. The actual barcode reads:.
CueCat driver for Linux – Freecode
Now, simply plug in the numbers from the left side of the chart, replacing cueca cooresponding pattern. This is the result of a barcode scan from a cup of Oreo YoCrunch Yogurt. You may be asking “How’d you manage that? Let’s reverse the capital and lower-case letters and try again. Give millions of geeks the same toy, and it evolves into a new toy. Yes, the encoding scheme using XOR would prevent a casual third party from submitting codes for steering.
A userspace utility is also provided to test a CueCat without patching the kernel, and plans to make kednel cheap serial pod for the CueCat are included as well. When a forms-capable browser is asked to submit form data to cuecah HTTP server, it does it in one of two ways. In other words, we krnel an interesting bracketing of numbers.
We see it matches the original barcode. The reason it’s not simply a numeric sequence, is because the makers of the CueCat didn’t want their toy to be used for reasons other than its intended purposes.
If you’d like to contribute content, let us know. So let’s start looking at bit patterns again:. Nope, that didn’t work; the three resulting characters are not the same. Q software, with the difference that you can choose which sites CueAct should point you to for which barcodes.