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Get to know your Keycard Shell
17 Sept 2025

  • Keycard Shell
  • Battery
  • 2 Keycards

An image showing the front side of Keycard Shell An image showing the back side of Keycard Shell
  1. 1
    TFT color display: shows menus and transaction details
  2. 2
    Power button: turns the device on or off
  3. 3
    Numeric keypad: for input and navigation
  4. 4
    Camera: scans QR codes for signing and verification
  5. 5
    Smart card reader: reads Keycards
  6. 6
    USB-C port: used for charging and firmware updates
  7. 7
    Battery slot: holds one Nokia BL-4C battery
  8. 8
    Back cover: protects the battery slot and holds the Keycard in place on the reader


An image showing the keypad of Keycard Shell
  1. 1
    Press â–² â–¼ Up / Down and â—€ â–¶ Left / Right to move through menu options on the Keycard Shell screen.
  2. 2
    Press C to cancel an action or go back to the previous screen.
  3. 3
    Press OK to confirm an action or select an option.

When you need to enter text, the Keycard Shell displays an on-screen keyboard. Use the physical keypad to move through the on-screen keyboard and select keys.

An image showing the on-screen keyboard of Keycard Shell

  • Press â–² â–¼ Up / Down and â—€ â–¶ Left / Right to move through the letters and symbols on the on-screen keyboard.
  • Press C to delete the last letter.
  • Press and hold C to go back to the previous word.
  • Press OK to select a letter.
  • Press and hold OK to confirm the word you type or select the suggested word.

Keycard Shell uses a replaceable 900 mAh BL-4C battery, designed to last for years. The battery is commonly used for older Nokia mobile phones and various other portable electronics. You can find the battery in many electronics stores or online.

note
The battery itself does not carry an independent dust or water resistance rating. Any protection against dust or moisture is provided by the device enclosure, not by the battery.

If the battery fails during the Keycard Shell's warranty period, please contact us at support@keycard.tech for support.

tip
You can charge the Keycard Shell using any standard USB-C cable.

For step-by-step instructions on replacing the battery, see Replace your Keycard Shell battery.

Last edited
17 Sept 2025