In order for your application to recognize the device, the device's details must be added to the application's manifest file.
Open up your project's Package.appxmanifest file by right-clicking on it in the Solution Explorer, selecting "Open With...", and then choosing "XML (Text) Editor".
Search for the "Capabilities" tag and add the following code in between:
<!-- HID Devices -->
<DeviceCapability Name="humaninterfacedevice">
<!-- UNIPAY -->
<Device Id="vidpid:0ACD 3110 usb">
<Function Type="usage:0002 0026"/>
</Device>
<!-- UNIPAY (Alternate) -->
<Device Id="vidpid:0ACD 3610 usb">
<Function Type="usage:0002 0026"/>
</Device>
</DeviceCapability>
The aforementioned code contains the possible combinations of vendor IDs (VID) and product IDs (PID) that a UniPay device can have depending on its configuration.
The Package.appxmanifest file should now look similar to the following:
<?xml version="1.0" encoding="utf-8"?>
<Package
xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10"
xmlns:mp="http://schemas.microsoft.com/appx/2014/phone/manifest"
xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
IgnorableNamespaces="uap mp">
<Identity
Name="757531c1-fe35-4ba0-b036-f3fd617220ad"
Publisher="CN=davidt"
Version="1.0.0.0" />
<mp:PhoneIdentity PhoneProductId="757531c1-fe35-4ba0-b036-f3fd617220ad" PhonePublisherId="00000000-0000-0000-0000-000000000000"/>
<Properties>
<DisplayName>UniPay_Simple_Demo_UWP</DisplayName>
<PublisherDisplayName>davidt</PublisherDisplayName>
<Logo>Assets\StoreLogo.png</Logo>
</Properties>
<Dependencies>
<TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.0.0" MaxVersionTested="10.0.0.0" />
</Dependencies>
<Resources>
<Resource Language="x-generate"/>
</Resources>
<Applications>
<Application Id="App"
Executable="$targetnametoken$.exe"
EntryPoint="UniPay_Simple_Demo_UWP.App">
<uap:VisualElements
DisplayName="UniPay_Simple_Demo_UWP"
Square150x150Logo="Assets\Square150x150Logo.png"
Square44x44Logo="Assets\Square44x44Logo.png"
Description="UniPay_Simple_Demo_UWP"
BackgroundColor="transparent">
<uap:DefaultTile Wide310x150Logo="Assets\Wide310x150Logo.png"/>
<uap:SplashScreen Image="Assets\SplashScreen.png" />
</uap:VisualElements>
</Application>
</Applications>
<Capabilities>
<Capability Name="internetClient" />
<!-- HID Devices -->
<DeviceCapability Name="humaninterfacedevice">
<!-- UNIPAY -->
<Device Id="vidpid:0ACD 3110 usb">
<Function Type="usage:0002 0026"/>
</Device>
<!-- UNIPAY (Alternate) -->
<Device Id="vidpid:0ACD 3610 usb">
<Function Type="usage:0002 0026"/>
</Device>
</DeviceCapability>
</Capabilities>
</Package>