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Operation Tablets Last Updated 04/20/2018

Knock code is a new security function that enables a user to unlock the tablet when the screen is off. The Home screen can be accessed directly if you tap the same sequence anywhere on the screen.

Note: KnockON double-tap to wake the screen is disabled when Knock Code lock screen is enabled. See the Lock screen article for additional information on lock screen features.

  1. From the Home screen, tap Apps  > Settings  > Display   > Lock screen

  2. Tap Select screen lock > Knock code.

  3. Read the tutorial and tap the Next button.

  4. Tap 3-8 times in the 2X2 grid shown to set your knock code. Then tap the Continue button. 

  5. Re-tap your code and tap the Confirm button.  

Note: Follow the on-screen instructions to create a backup PIN number in case you forget your knock code.

Screen off

When the screen is off, tap the sequence of your Knock Code anywhere on the screen to access the Home screen directly. You can enter your code in a small space, or over the full width of the tablet.

Lock screen

When your device is on, and you are on the locked screen, tap your Knock Code in the area enclosed by angle brackets under the clock widget to unlock your tablet.

  1. After five incorrect Knock Code attempts, a notification appears saying “Wrong Knock code entered 5 times in a row. After 1 more unsuccessful attempt, your backup PIN will be required” and a Forgot Knock code? button appears at the bottom right side of the screen. Read the notification, and tap OK.

  2. The next screen shows a 2x2 grid that provides the same environment as a Knock Code setup for a more accurate input.

  3. If you incorrectly enter your Knock code for the 6th time, you cannot enter it anymore.

  4. If you have a backup PIN setup, you will be prompted to enter it to unlock.  If you have not setup a backup PIN or forgot your PIN, you will need to perform a factory reset.

To perform a factory reset:

  1. Turn the tablet off.
  2. Press and hold the Volume Down key + Power/Lock key.
  3. Release all keys when the Recovery mode screen is displayed.
  4. Press the Volume key up or down, highlight Yes and press the Power/Lock key to continue. To cancel select No (Exit) and press Power/Lock key.
  5. Press the Volume key up or down, highlight Yes and press the Power/Lock key to confirm. Once confirmed the device will restart and factory data reset will be performed.

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