How can we recognize each EyeTribe device?

[Memo]

Dear Martin,

I need to separately identify every connected EyeTribe device. Is there a unique number like a serial number that we can get from EyeTribe, at anytime?

Please advice me something unique which reported from EyeTribe device.

[Martin]

Hi Memo,

Yes, each device contains an unique identifier that is set when the firmware is flashed at the factory.

Accessing it is unfortunately not straightforward, we primarily use it internally to keep track of the manufacturing process (batches, dates, components etc.)

If you are able to read UVC Extension Units it is available under item #7 and is in the format of:
"1f878b8c-f88c-47e4-892a-832fca66f3cb-2050611", along with four-digit numbers for firmware version and hardware revision.

Here's a little C# snippet from the drawer:

Code: Select all

        internal unsafe void ReadDeviceInfo(out string uuid, out ushort HwRev, out ushort FwRev)
        {
            byte[] array = new byte[49];
            byte[] array2 = new byte[45];

            fixed (byte* ptr = array)
            {
                long num;
                ReadFromUVCExtension(dsFilter, 7, new IntPtr(ptr), 49, out num);
            }

            HwRev = (ushort)(array[0] | array[1] << 8);
            FwRev = (ushort)(array[2] | array[3] << 8);

            for (int i = 0; i < 45; i++)
                array2[i] = array[4 + i];

            uuid = Encoding.Default.GetString(array2);
        }


The method "ReadFromUVCExtension" is a method located in a C++ DLL, along the lines of these Microsoft samples.

Probably a better idea to expose it through the API

How badly do you need it, and when?

[Memo]

Hi Martin,

After I have finished my other projects, I am planning back to finish my HAYDi:EyeTribe software. Probably I will rewrote and beautify it again with my experience, if this hot summer allows me .

In the final stage, I will be need a unique things to lock my software for the protection. I haven't noticed such thing with my quick look. I was thinking of below options.
a. Preparing a hardware dongle which I don't prefer. Since it kills the usability.
b. Designing a new EyeTribe usb connected motorized holder (which it will compensates z and x axis of user head movements) and embedding my own serial number in it.

You gave me the answer, thank you. According to sample you are using UUID version 4 which is OK for me.

Exposing it through the API is perfect thinking. I have plenty of time and prefer to get it from API.

This also helps to ryklin's request. They can get the number with a small utility and print on a sticker to use in their equipment inventory system.

serial numbers
Postby ryklin » 28 Jul 2014, 20:19

Hi,
Large organizations need to be able to keep inventory of its equipment. It came to our attention that there is no serial number printed on the tracker. You may want to consider adding this for future shipments.