The standalone kit: KFDPro on your own Android device

The standalone kit is the KFDPro security adapter in its own enclosure, for an Android device you already own. The app is the same as on the complete unit, and so is everything it does over the key fill port, USB and Ethernet. This page covers what is different: your device, installing the app, and licensing it.

In the kit

The KFDPro security adapter, with the Hirose 6-pin key fill port, a USB-A port and a 10/100 Ethernet port. It is powered by your device.
A USB-C cable, from the adapter to your device.
An activation key, printed on a card. It licenses the app on one Android device.

Not included: your Android device, your radio's keyload adapter or USB programming cable, the male-to-male Hirose 6-pin cable, and an Ethernet patch cable for KMF and AuC sessions.

Ordered before October 29, 2026?

Standalone kits ordered before October 29, 2026 are first-revision kits, and their adapter has no Ethernet port. On those, store and forward with a KMF and sending keys to an AuC over the network aren't available, and Settings › Network says No wired adapter. Radio authentication itself works, and the key pairs reach the AuC as the HTML report. Everything else on this page applies as written.

What your device needs

Android 7.0 or later.
USB host (OTG) support, so the device can drive the adapter and the USB devices behind it. Nearly every phone and tablet of recent years has it.
A USB-C port, for the cable in the kit.
Installing apps from outside Google Play allowed. The app comes from kfdpro.com, not from an app store. Android asks for this permission the first time; see below.
For the Ethernet port, Android's own support for wired networks. It should work on most Android devices, but a few leave it out. On those, Settings › Network keeps saying No wired adapter with a cable connected. Everything else in the kit works either way, and radio authentication keys reach the AuC as the HTML report.

Caution

A general-purpose device with Wi-Fi, cellular and other apps is a less secure place for key material than the complete unit, which is locked down by device policy. Keep the device's screen lock on, keep it updated, install nothing you don't trust, and follow your organization's policy on what may hold keys. If the device is lost, treat the keys it held as exposed.

1. Install the app

On the device, open kfdpro.com/app in the browser, enter the activation key from the card, and download the app. The page shows the version, the file size and the SHA-256 checksum of the file.
Open the downloaded file, from the browser's downloads or from the Files app. If Android says the device isn't allowed to install unknown apps from this source, tap Settings, allow it for that app, and go back. On Android 7 the switch is Settings › Security › Unknown sources.
Tap Install. Google Play Protect may say it doesn't recognize the app, because the app isn't distributed through Google Play. Choose to install anyway.
Open KFDPro and accept the terms of use. The app then shows Licensing required, which is expected: it has no license yet.

2. Activate your license

Tap Open Licensing, then Save the license request. It writes a small text file on the device.
In the device's browser, open kfdpro.com/activate. Enter the activation key from the card and choose that file. The page gives you the license file to download.
Back in KFDPro, tap Choose the license file, pick the downloaded file and tap Install. The app opens on its main menu.

The license is bound to this device. Keep the card: the key allows a small number of activations, so a replacement device can be licensed with it. The Licensing screen and the license hash are described under Licensing.

3. Connect the adapter

Plug the USB-C cable into the adapter and into your device.
The first time, Android asks whether to open KFDPro for the adapter. Allow it and, if offered, choose to always do so, so you aren't asked each time.
Settings › Link shows the adapter in use. From here on, loading keys is as on the complete unit: see Connecting to a radio.

For store and forward or the AuC, plug an Ethernet patch cable into the adapter. Once the network answers, Settings › Network shows the port and its address; see Network.

The adapter draws its power from your device, so start a long session with the device charged.

What is different from the complete unit

On the complete unit	With the standalone kit
The app is the handset's home screen	KFDPro is an ordinary app on your device. Open it from the app list.
The license is installed at the factory	You activate it yourself with the key in the box, as above.
Software updates come as a package on a USB drive	A new version is downloaded from kfdpro.com/app, with the activation key from the card or the license hash under Settings › Licensing. Install it over the version you have; your keys, settings and license stay.
Wi-Fi, Bluetooth and cellular are off by device policy	Your device's settings are your own. The app still holds no Wi-Fi, Bluetooth or network-state permission.