Quickstart Guide — Idem Card 



1.1 Turning Power ON/OFF

Power ON

Touch the dark-blue area, and the blue light will be on

Power OFF

Touch the dark-blue area and keep touching for 9 seconds, Idem Card will be powered off​


1.2 Charging 

Idem Card can be charged by Idem Card charger. Attach charger to conventional 5V power adapter and insert Idem Card into the charger. ​ The green light and red light of Idem Card will be both on during charging. ​ When Idem Card is charged to full, green light will be on and red light will be off


1.3 Touch Behavior

Power on Idem Card

A simple one-touch to power on Idem Card when Idem Card is OFF 

Enter pairing mode

Touch the dark-blue area and keep touching for 3 seconds, and Idem Card will enter pairing mode

Power OFF

Power OFF under pairing mode​ When Idem Card enters pairing mode, touch the dark-blue area and keep touching for 6 seconds and Idem Card will be powered off​

Powers OFF Idem Card

Touch the dark-blue area and keep touching for 9 seconds, and Idem Card will be powered off


1.4 LED Status Indicator

There are 3 colors of LED indicator to present the status of Idem Card. 

Bluetooth paring mode

Flashing every 0.3 seconds.

BLE data transmission

Flashing every 0.1 seconds.

Idem Card is powered on and not doing any action.

Blue LED is always ON.  


Idem Card is fully charged to 100%. 

Pairing is complete.

The battery is running out of power.

2.1 How to use Idem Card for Computer login.

GoTrust ID 

Idem Card can work with GoTrust ID for Windows and Mac login without a password.  

  • Windows Sign-in 

GoTrust ID is a Microsoft Hello certified phone login Windows Hello APP and utilizes Windows Hello companion device framework to do Windows Unlock. GoTrust ID supports user to utilize Idem Card as an alternative authenticator to unlock Windows without password. 

  • Mac Sign-in 

In MAC OS, there is no system service for an app to do computer sign-in similar to Windows Hello companion device framework. To enable user sign into Mac OS without password, GoTrust ID stores an encrypted user’s password in Idem Card during the registration process and sends an encrypted password to Mac from Idem card when user is signing in. Detail information of the signing in process is described in “GoTrust ID Solution Product data sheet”. 

2.2 How to use Idem Card for FIDO supported applications. 

Idem Card can be used as a FIDO2 and U2F token on Windows, macOS, Android, and iOS devices.  

Idem card supports both FIDO2 and U2F. Many web services start to support FIDO2 Webauthn API and will replace U2F.  

  • System Requirement

Windows 10 Version 1903 or later

2.2.1 Pair Bluetooth device in Windows

To use BLE (Bluetooth) interface of Idem Card on Windows, user needs to pair Idem Card in system settings.  

Step 1

Go to Notifications-right click Bluetooth icon-Go to settings

Step 2

Go to “Bluetooth & other devices” of Settings. And click “Add Bluetooth or other device”

Step 3

Touch Idem Card to power on it and keep touching 5 seconds.

Idem Card will enter pairing mode and you’ll see Idem Card device showed in the screen of “Add a device”.  

Step 4

Enter pairing code which is showed at back of Idem Card.  

Step 5

Paired successfully.

2.2.2 Manage Idem Card in Windows 

Step 1

Go to “Settings” → “Accounts” → “Sign-in options” and find the button “Manage” of “Security Key”. 

Step 2

Touch to power on Idem Card when the following dialog is popped up. 

Step 3

New (Add) Security Key PIN.

Step 4

Change Security Key PIN.

2.2.3 Idem Card as FIDO2 Authenticator for Web Apps on Windows

FIDO2 Webauthn API is already fully supported on Windows. Table below is the FIDO2 support matrix. There’re web apps which can use Idem Card as FIDO2 authenticator over BLE/NFC interface on Windows and FIDO2 BLE/NFC interface (CTAP2 BLE/NFC) is not enabled in macOS.  

You will be directed to the selected application’s site to see the instruction.


GoTrustID Inc. (GoTrust) is a world leader in password-free user identity from the phone and the computer to the cloud.

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