Hamsters 101

Root Folder
A quick guide to verifying that your Hamster is online and functional.
The Diagnostics tool

Press the Windows Key and R. This should bring up the Run window. In this window, enter sgdx and click OK.
Please make sure that your Hamster is plugged in.

When the app opens, the drop-down box indicated by the orange arrow will display a list of all Hamsters it could detect. Click on the one you wish to test, and initialise it by clicking on init.
When the device has been initialised, place your finger on the sensor and click Capture.

When looking at the image on the screen, it should be crisp and clear, with the ridges clearly visible,
the contrast high. The image below illustrates what the captured print should look like if everything’s
configured as it should be.

If the images on your device don’t appear to be correctly done, click on the Config button, as
indicated by the blue arrow.
When the config screen opens, you will be presented with a number of options.
The manual sliders, indicated by the orange arrow, allow you to set the brightness and contrast ratios to a setting you prefer. Generally, this is reserved for experts or tests, and these settings are best off left alone.

The Preview button will capture a print to display what it looks like with the currently selected settings. Please place your finger on the sensor before clicking on this button.

The Auto Exposure button allows the Hamster to auto-calibrate its brightness and contrast settings to what it considers optimal for the environment it is in. To use this feature, place your finger on the sensor and click Auto Exposure, being sure to keep your finger firmly on the sensor until the process completes.

Checking if your device was detected by Windows

Please note that this process may differ slightly for earlier versions of Windows.

Right-click on My Computer in your Start Menu and click on Properties.

In the opening screen, at the top left corner, click on Device Manager
If your Hamster was detected correctly, you will see the Biometric Devices menu item when it is plugged in.

Expand that menu and you should see the same code as was identified by the Diagnostics Tool earlier on. If these entries are not present, we would recommend unplugging your Hamster, re-installing (or installing) the Hamster drivers, plugging it back in and repeating this process.
Common issues

My Hamster was working before, but now the software doesn’t detect it!

The Windows Biometric Framework (WBF) drivers installed by Windows Update are not always fully compatible with the sensors, which confuses the software.

If this happens, please re-install the drivers, clicking Yes on any dialog that prompts whether or not you would like to overwrite the newer files with older ones.

Once the drivers have been reinstalled, your device should function as normal. In the meantime, keep an eye on the iPulse website – as soon as drivers are available that addresses this particular issue it will be uploaded there.

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