After passing through the turnstile, He Ao glanced at the card in his hand.
Printed on the card was the appearance of a thin middle-aged man, who was 50 or 60% similar to Joey. There were also some dried blood stains on the card that had not been removed.
This is Joey's father's work card.
The opening principle of this kind of factory-customized work card is that the chip inside all work cards will have a code, and this code corresponds to the worker's job number.
When the work card is produced for the first time, there will be a special authorization machine to authorize the work card. Only the authorized work card can swipe the door lock machine. The longest validity period of this authorization is one month.
The gate itself is both an authorization machine and a verification machine.
Whenever the authorization expires, the gate will read the code of the work badge, upload the data to the cloud database, and compare it with the worker information in the database.
After confirming that the worker is still employed, the gate will re-authorize the work badge for a short period of time.
Generally, the reauthorization time is set at a fixed time of a certain month, usually within the three days from the 5th to the 7th. The factory's shift scheduling system will allow everyone to schedule a shift within the three days from the 5th to the 7th, so that the gate can reauthorize the work badge.
Therefore, there is a loophole in this access control system. After a factory worker leaves his job, his work badge is still valid for a short period of time, which means that he can swipe the access control until the authorization of his work badge expires.
Therefore, the factory will generally require workers who leave their jobs to return their work badges. The returned work badges can be used by new employees after resetting the code and reprinting the image.
However, no one will ask the deceased in a factory accident to return his work badge.
When Joey came to the factory to receive the remains of his parents, the staff returned the remains, which had been broken into several pieces, to Joey without any inspection.
Joey found his father's work badge in the work clothes affixed to his father's body. In fact, he also found his mother's work badge, but the work badge had been broken into pieces.
After finding the job tags, Joey recalled the knowledge about these job tags, which he had read in an encyclopedia magazine in the library.
He immediately returned to the library, found the encyclopedia magazine again, and confirmed that the access control system of Anvis Mechanical Factory was the access control system described in the encyclopedia magazine.
After understanding the loopholes in the system, he already had a plan in mind.
Joey's parents had an accident before the 5th, but generally such deaths occur relatively rarely, so the handling personnel are not very experienced.
Therefore, Joey guessed that it might take several days after the death of the parents before the factory administrators would remember to delete the parents' personal information from the database.
So when he came to the factory to protest on the 5th of last month, he secretly used his father's work badge to swipe the turnstile. As he expected, his father's information was not deleted from the database, so he obtained a new short-term authorization.
His actions were very secretive. Most people, including many senior managers in the factory, did not know the operating principles of the gates or the operating loopholes of the gates, so no one took precautions against him.
Today is the 3rd, and the temporary authorization obtained last time will not expire until the 7th.
Of course, in addition to the gates that are authorized once a month and have loopholes, are there any gates on the market that can calculate and verify employee information in real time?
Yes, but you have to pay extra.
Not only do you need to pay extra for the equipment, but you also need to pay extra for the continued purchase of data traffic.
Dawn City's technology is very advanced, but the factory is not willing to spend any more money.
He Ao sighed lightly and walked deeper into the factory.
Joey is not stupid, he is even very smart, he is just too weak.
After entering the factory, He Ao followed the memory of Joey and walked towards I District step by step.
Only by actually seeing the robotic arm, understanding the specific situation, and conducting further investigation can He Ao know the real cause of the accident.
Joey had tried several times before to enter I District and even investigate inside the factory, but was blocked by various surveillance personnel.
Anvis Mechanical Factory's defense level seems to be very high.
That's why He Ao designed today to lure all the intelligence personnel away so that he could enter the factory to investigate. This plan was arranged before meeting Jack. He asked Christos to help find the person with a similar build to him.
After meeting Jack, He Ao became more determined to sneak into the factory to investigate.
Of course, there were two reasons why he went to pick up the blank card from Jack.
The first is to plant a psychological hint for the intelligence officers who observe him.
Lead these intelligence officers to think that he will use Jack's card to cross the access control, so that they will always be in a less nervous state before the actual alarm is issued, thinking that He Ao has not entered the factory, and casting a layer of camouflage on He Ao's investigation.
The second is to convey a message to Jack.
The position he was standing at that time was facing away from the eyeliner who was following him at close range, and the other party could not see his facial expression.
——
Bang bang bang——
"Open the door."
A huge knock on the door came from outside the house, and the old door creaked with the force of this bull-like force.
"Open the door quickly, Charity Association is delivering flour."
The knocking on the door continued for a while, and the voice of the person outside the door became more and more irritable.
Finally, the knocking on the door stopped abruptly, and the entire space fell into a brief silence.
But the silence was soon broken by a loud noise.
The old door was knocked open by someone outside.
Almost instantly, several Brawny Mans with guns rushed in. They squeezed into the small hallway and began to move forward quickly.
They searched around, checking the bathroom, kitchen, living room, and bedroom in turn.
"Shit, run away."
One of the strong men looked at the messy bedroom and cursed.
"Look again."
The strong man at the front waved his hand and continued to check in the living room.
His eyes finally stopped in front of a home surveillance camera, which glowed slightly with blue light and seemed to be running.
Then he shot the camera.
······
The surveillance screen in the field of vision flickered, indicating that the network was disconnected.
Jack exited the monitoring software, closed Bracelet, looked up at his daughter sitting next to him, and gently touched her head.
At this moment they were sitting in a wide and bright hall.
"What happened?"
A plump woman in simple clothes ran over from a distance, panting and looking at Jack,
"I was suddenly asked to resign and have to go to another city. Do you know how hard it was for me to find this job? The working environment is good, the money is enough, and except for the naughty chef, it is almost a perfect job."
Jack looked at his wife's complaining look, smiled softly, stood up and hugged her, "Aisha, we are free."
"Huh?"
Aisha is a little confused.
Jack smiled, said nothing, and just hugged his wife tightly.
In the past two years, every time he wanted to buy a ticket to leave the city, he would be threatened by inexplicable gang members. He knew that he was under surveillance. Although the other party was not watching him all the time, they wanted to make sure that he would not talk nonsense and that he would not flee the city. They were always under surveillance.
After several failed attempts, he had almost given up on escaping.
Until this afternoon when He Ao took the blank card from him, after the words "thank you", He Ao gently mouthed him.
He understood the meaning of that mouth shape.
"Run"
Jack chose to believe this boy. This time, he bought a ticket and left without any hindrance. During that short blank period, everyone at Anvis Group seemed to be chasing the boy.
"Okay, okay," Aisha patted her husband's back gently, "If you didn't tell me why you left, you should tell me where you are going, right?"
"Passengers heading to Kaya City, please note that the Dawn Aviation M1393 aerostat flying from Dawn City to Kaya City will start checking in tickets soon. Passengers taking M1393 are asked to go to the ticket checking area as soon as possible to start checking in."
A gentle mechanical female voice suddenly came from the PA in the hall.
Jack let go of his wife, then grabbed her hand with one hand, and picked up his daughter who was blinking with the other hand.
"Let's go to Kaya City."
There, Anvis Electric Power Group's power is the weakest.