The locks used in school dormitories, like hotels, are electronic locks.

A few days ago, when she went to the girls' dormitory to help Yi Wenna carry her luggage, Ai Liang observed the stairway doors and dormitory doors, and the brand and model of the electronic locks used.

Such as community gates, hotel rooms, dormitory door locks...these are all NFC electronic access control cards.

As long as there is an nfc decoder and the corresponding decoding software, it is quite easy to crack, and it can be said that it is enough.

Among them, the access control of the gate of the community is the simplest. Usually, there is only an ID card with a string of card numbers. You can directly touch a card from the residents of the community, copy and paste it and it will be ok.

The entire fool-like operation, there is no possibility of missing if you can read and write.

The hotel's key card is a bit more complicated. The key card is simply encrypted. After leaving the hotel within a certain range, you need to go to the front desk to reactivate.

But as long as you want, you can still open a room, then use a decoder to decrypt the data in the room card, and then import the generated dump file into the white card.

In this way, you can get a duplicate room card.

Those who are capable can also hack into their database through the hotel's internal network and make a master card for themselves that can open all rooms.

However, this self-made universal card cannot be used for a long time. After using it twice, people will find that the program is abnormal, and then your card will be blocked.

If there is any long-term need, it is most convenient to directly steal the universal card of cleaning.

Of course, this refers to the general hotel.

For those special high-end hotels, this method is useless.

For example, in the East District of Yichen Hotel, in addition to the room card, fingerprint and face recognition are required to be registered there. It is completely idiotic to want to enter the room with just a room card.

The last is the student card of Qianhua Experimental Middle School, or the meal card of other schools, which can save money and have strong security.

After all, money is involved, and security cannot be tight.

However, the security level is also linked to the importance attached by the contractor company.

One is that if a data conflict is found, the most recent data will prevail, making the copy card unusable.

This kind is relatively advanced, and the anti-theft system is perfect, and normal companies are willing to spend money on this.

The other is that the duplicate card is available, but the amount in the database will be negative. This is an old-fashioned system, which is very easy to hack, and the cheapest system bought by the company.

Take the simplest example.

You spend 50 yuan to get a water card, and then copy the data in it to a white card.

After the 50 yuan of the card is spent, take out the copied white card and continue to use it.

Because the data in the white card is still the data at fifty yuan.

If the white card shows invalid data, it is the former situation. In this case, the general copying method is useless, and a more advanced decoder is needed to crack the machine program.

But if the copied white card can continue to be used, it is the latter case.

Although you can copy unlimited water cards worth 50 yuan, the database is accounted for.

After the original 50 yuan is spent, the background data balance of this card will become zero. If you continue to use the copied white card, the data of -50 and -100 will appear.

People will know that you have a problem by looking at the books, so don't try to make a lot of money by selling white cards.

When you meet someone in charge of the Buddhist system, the adults don’t remember the mistakes of the villains, update and upgrade the data, and encrypt it again, and the matter is over.

If they meet a master who refuses to suffer, they will call the police and arrest him.

However, Ai Liang borrowed Yi Wenna's student card just to obtain the data files of the dormitory's electronic lock, so there is no need to worry about it.

Why doesn't Ai Liang use her student card...

Neither he nor Ye Qing is a resident student, and the data permissions on the dormitory door locks have not been imported.

So I had to copy the data of Yi Wenna's student card first, and compare it with my own student card. The extra part was about the authority of the dormitory door lock.

After confirming the data, Ai Liang will "link" into the school's database to find similar files, and then import all the found file data into the white card.

In this way, he can use a white card to open all the dormitory doors.

That Peng Yuan used this method to open the electronic locks of Yi Wenna's dormitory door and the staircase door.

As for the U-shaped lock added to the door, for experienced hands, it can be opened with a wire with eyes closed.

For things like padlocks and U-shaped locks, practice more lockpicking skills. There is basically no difference between locked and unlocked.

In the movie, there are many acts of opening handcuffs and breaking doors that look awesome.

In fact, if you buy samples yourself and practice more, you can do the same.

It is no exaggeration to say that a pair of scissors and a piece of iron are given to the lockpicker, such as electric cars, motorcycles, and handle-type wooden doors.

People just glance at the keyhole and they can cut a key for you on the spot.

It's all about practice.

Yi Wenna looked at the computer in front of Ai Liang with a strange expression, which was the same thing as the charging board.

"Are you going to copy my student card?"

Yi Wenna seemed a little hesitant: "But my student card can only open my dormitory, and I can't enter that guy's dormitory."

"I just need a reference data."

Ai Liang withdrew her arms and sat down in front of the computer again and said heavily: "Hurry up and get it."

How fierce are you, just take it!

Yi Wenna walked out of the living room with small steps, and came back shortly after holding the student card between her index and middle fingers.

She patted her student card on the table: "Here."

Looking at the programs running on the computer desktop, Ye Qing raised another question: "The dormitory can be entered, but how to check his computer? There should be no one who doesn't set a password for his laptop now, right?

And Ah Liang, you just said that the other party is very likely to have the technology to remotely control the computer, wouldn't it be exposed as soon as it is turned on? "

"Don't worry about this, cracking the computer password is not difficult."

Ai Liang quietly looked at the deciphering progress bar of the student card data: "In addition, I also have a solution to the remote control of the computer.

After cracking the student card ~lightnovelpub.net~ I will make a simple high-frequency radio interference device to shield all electronic signals in a small area. use. "

"High-frequency radio interference device? Do you have materials?" Ye Qing asked with her chin in one hand.

"Wait a minute! The point is the raw material?"

Yi Wenna pointed at Ai Liang and shouted: "Compared to the raw materials, why Ai Liang made that kind of thing is not the point!"

Ai Liang ignored Yi Wenna who made a fuss: "Buy some signal jammers online, take out some parts and modify them."

"Can you two stop discussing these topics in a serious way!"

Seeing Ai Liang ignoring her, Yi Wenna was a little mad, but her complaints were still sharp: "I bought a signal jammer, and it's fine if I just don't use it, why do I need to modify it!"

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