Ouch hey! The LED screen I just bought suddenly popped up with a password interface, and I was so anxious that I was sweating? After setting up the password, I forgot it and wanted to smash the console? Don’t panic, I will teach you step by step to solve this problem that makes you bald!

1. Three-step quick method for password setting

​​Step 1: Find the right entrance​​
Different models of motherboards have poor settings:

1. With physical buttons → Press and hold "MENU+↑" for 5 seconds
2. Full touch screen → Scratch Z-shaped gesture in the lower right corner
3. Rental box → Press the number key of the remote control "1983" (this string of mysterious code has been recorded)

​​Step 2: Core parameter setting​​
Here is a secret of the industry:​ ​Passwords must be linked to screen size​ ​Only safe!

• Screen below 10 square meters → Set 6 digits pure numbers
• 10-50 square meters → letters + numbers combination
• Stage floor tiles screen → must have special symbols (!@# these)

​​Step 3: Leave a back road in emergency passage​​
Smart people do this:

1. Bind the administrator's mobile phone number to receive verification code
2. Set up confidentiality issues (don't use "birthday" as a fool can guess)
3. Print the QR code to paste the inner wall of the control box (scan the code to jump directly to the reset page)

2. First aid guide if password is lost

​​Situation 1: Forgot the password of ordinary operation​​
Operation in this order:

1. Press F2 key → Enter safe mode when power is off and restarted
2. Enter the general recovery code "NS2023reset" (note that it is case sensitive)
3. Modify the default password immediately after reset

​​Case 2: Hardware-level password lock​​
When encountering such a tough guy, you have to use your ultimate move:

1. Find the CLR jumper on the motherboard (usually marked with a red circle)
2. Short-switch with tweezers for 15 seconds (release when you hear the sound of dripping)
3. Wait for the screen to automatically restore the factory settings (about 3 minutes)

​​Important reminder​​：

• The scene preset will be lost after the box screen is restored
• Remember to backup configuration files in advance when renting screen
• The stadium screen must be unlocked in contact with the original factory (involving structural safety)

3. Anti-forget password black technology

​​Biometrics Programs​​
Now all high-end screens are playing these tricks:

1. Fingerprint module → Press the control box sensing area for 2 seconds to unlock
2. Voiceprint recognition → Say the specific password "the display screen lights" (must have dialect flavor)
3. Iris scanning → An additional 2,000 yuan certification module is required

​​Two-factor authentication exercises​​
Give a real case: a shopping mall is playing like this

• Step 1: Enter a 6-digit dynamic code (mobile APP is updated every minute)
• Step 2: Swipe the card to verify (the IC card needs to be attached to the NFC area of ​​the control box)
• Step 3: Face recognition (can be recognized even when wearing a mask)

Last week, I helped the gym owner handle a weird thing - the former store manager changed his password when he left his job, and the new guy stared at the black screen. Finally, I found a note on the back of the control box, with a turtle painted on it, and the turtle shell read "NS7510". Try typing this string of characters, hey! It's really unlocked! So, passwords must be safe enough, and you must also leave some secret codes that you only know. Next time I encounter this thing, according to the tricks I mentioned, it will definitely be more effective than finding a lock unlocker!

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