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"Snowing."

Tang Chao landed on the roof of a building again, and looked at the sky that had been completely covered by dark clouds and the scattered snowflakes that had begun to fall. He felt great.

According to the weather forecast, there will be heavy snow and strong winds. This kind of weather is most suitable for trouble.

Although it is possible to leave footprints, when the snow is heavy, the wind blows, everything can be flattened, and then covered.

When the other party came to the door, he had already returned to China.

He is not an agent who has been lurking here for a long time, he is just a passing science fiction assassin.

He leaped over a dozen roofs in a row, and even some two-way two-lane roads that were not too wide also flew past. He didn't stop until he met a two-way four-lane road on the way forward.

It's not that you can't jump over a distance of more than ten meters, but that the action of jumping such a distance is too large, and the probability of being found will increase, so I gave up.

However, he looked around, and in order to prevent anyone from finding him as an assassin coming down from the outer wall of the building, he returned to a building.

There is an alley behind that building. The alley is very dark and no one passes by at night, so it is very suitable for him to go downstairs.

The buildings in this area are also traditional maozi buildings, decorated with various patterns, stripes, and reliefs, which are very easy to climb.

When he got down, and walked to a place where the light could shine, the little snowflakes had turned into heavy snow, and the cold wind was blowing.

Look at the pedestrians on the street again. They all wrapped their down jackets tightly, wrapped their scarves, put on their hats, and wrapped themselves tightly. Not to mention seeing the face, but seeing the eyes is good.

Now that it's all like this, Tang Chao naturally followed suit.

His coat is the kind with a hood, so when the hood is put on and the collar is erected, he is "fully armed".

The first target is not too far away, and there is a straight line for a few hundred meters. The crow tracking the other party has landed and released an insect monitor and followed the person’s room, while the crow found an eaves outside. Hiding away, and continued to observe the gate.

After all, heavy winds and snow have a big impact on the equipment.

The other crows are also tracking the target. Most of them have returned to their residences, and only three people are still shaking outside. This is too unfriendly for the crow reconnaissance plane. Tang Chao feels uncomfortable looking at the three monitoring screens.

It's too shaky.

Tang Chao has already given an order. If the wind and snow continue to increase and are big enough to threaten the safety of the bionic crow, and the opponent has not returned to the residence, the mission will be suspended.

At that time, the tracking and reconnaissance mission will be converted to a safe evacuation mission. The crows need to find a relatively safe place nearby, then enter the energy-saving sleep mode, and return directly when the external conditions are suitable for flight again.

Because the wind and snow are getting stronger, there are fewer pedestrians on the road.

Every pedestrian wrapped himself up tightly, and walked in a hurry. The science fiction assassin Tang Chao passing by was also a "passerby", so he was also in a hurry.

Soon, he came to the downstairs of Target One, which was an apartment building.

The buildings in this area are relatively old, they should be old, and the architectural style is even more old-fashioned. According to the pictures of crows and insects passing by, the management inside is not very good.

If it is a person who has sufficient funds and has a certain pursuit of quality of life, he will basically not choose this place. However, this situation not only meets the requirements of some people with strict life, but also meets the needs of some people.

People with ulterior motives.

Anyway, it's a bit shabby and messy, so I don't care who is living in, there is no camera even here, and people who come in and out don't care, just pay the rent.

Tang Chao also found many Russian hints.

[Take care of your belongings, we only provide houses, not security!

[Check if you have forgotten to pay the electricity bill, tripped or the room wiring is aging, don’t call me right away!

[Take care of your own fire source. If it causes a fire, you will pay for the fire protection expenses!

[You can change the color of the wall, but it is best not to change its shape, otherwise you will face a huge fine!

That's probably what it means. In addition to the responsibility of dumping the pot, the rest is asking the tenant to protect the house.

After all, this kind of old apartment makes a profit by pointing to the cheap rent. If the house is destroyed by the tenant, the repair fee will definitely cost a lot of money.

As the owner of a cheap apartment, he doesn't want to pay the money.

On the mission side, because the insects followed in, the crow went around the building a few times when it fell down and stared at the gate, and found that the agent’s residence was on the fifth floor with two windows, one large and one small.

This height is neither high nor short, and with all kinds of private construction on the windowsill, it is very easy to find a way to go up.

Therefore, even if there are unauthorized constructions on the windowsill, none of the protective nets have fallen.

I won’t talk about the windows of other houses. They are messy anyway, and the spy’s windows are a bit "design".

It's not that his windows are not messy, but that there are chaos and rules. Other people's chaos is real chaos. For rock climbers and parkour enthusiasts, it is not difficult to climb up or down, but The spy’s window is different.

Although his windows look messy, there are some messy places on the top, and protective nets are installed. Some spikes, rusty wires, and broken shelves are even protruding from them. The first impression is that they are used. To guard against window-climbing thieves.

But in Tang Chao's view, anti-thief prevention is secondary. It is true to be prepared for some emergencies. Even at critical moments, the other party can use those messy things to create some small dangers and make themselves run faster from the window.

After observing the outside, he observed the spy from the perspective of insects. When he saw the other party eating fast food while communicating with some people on the computer, he decided to go up.

If the bug doesn't go up, the battery will be dead.

No way, the body size limits the power of the bug detector. This thing is useless outside at all. It can only be used in a mode of forming an aircraft carrier and a carrier plane with a larger detector.

For example, they match the crow.

The crow is definitely not obvious outside, but when it enters the room, it must be very conspicuous.

Of course, you have to say whether you can enter the room.

So it must be matched with a smaller detector.

The bug detector doesn't work well on the outside, but if it is placed indoors, it is definitely easy to use.

Generally, there is no complicated air movement indoors, which is very advantageous for the movement of the bug detector. As long as you avoid the air supply track of electric fans and air conditioners, you can fly or climb anywhere else.

And it’s not that the power is limited. If you can find a good angle, you can directly monitor it statically. It will definitely save more power than monitoring during exercise.

The bugs currently being monitored indoors are in this mode.

But that's it, it doesn't have much power. If it weren't for Tang Chao's arrival, the crow would plan to move around and fly to a place with a gap to release another bug detector relay.

At present, this amount of power is enough for Tang Chao to find the spy's residence, and then provide the spy's reaction when Tang Chao slipped the door to pick the lock.

"Wow~"

When Tang Chao was about to enter the door, someone came over, and the other party was also going in, so Tang Chao didn't even open the door. He just followed in after the other party opened it.

The other party was wrapped tightly, and the snow in his suit was the same as Tang Chao's situation, so what he did after entering, Tang Chao also did.

It seems that he is familiar with this place.

The other party didn't do anything, and ran upstairs directly, without even flicking the snowflakes on his body.

"Buffalo!"

Tang Chao quickly followed.

These people do not play cards according to their routines than him.

The man turned a corner when he reached the second floor, and Tang Chao ran to the fourth floor according to the man's pattern, and then began to go upstairs quietly.

With the aid of nano combat uniforms, his special structure sole can absorb sound well, allowing him to walk like a cat predator.

When he went upstairs quietly, the bug continued to provide him with pictures. The spy ate half of it, but he no longer ate it. Instead, he put it aside and used the computer attentively.

good chance!

Tang Chao came to his door lightly and found that this was a simple mechanical anti-theft door.

Also, this is not a high-end apartment after all. There is no camera in the corridor. Without a camera, you would definitely not use an electronic smart door.

And how to put it, in the Internet age and the intelligent age, smart door locks may not necessarily have mechanical door lock security.

The essence of a smart lock is a mechanical lock, but it is equipped with a motor to support an electric unlocking method, and then integrates fingerprint recognition, password, door card, Bluetooth, mobile phone App and other modern unlocking methods to become a smart lock.

If the previous mechanical locks only had to guard against one aspect, there would be more places for smart locks to guard against, in addition to the original mechanical lock module, but also against circuits, systems, and authentication.

For example, some smart door locks known as facial recognition can be opened by swiping a photo, which is faster than trying facial recognition in person.

The key word in news reports about smart door locks being broken the most is "little black box", which is the easiest and rude thing to crack smart door locks.

This small black box is actually a mini high-intensity electromagnetic pulser, which can form a strong magnetic field and destroy the surrounding electronic devices.

When the smart door lock encounters such a strong voltage and current, it will cause the chip of the circuit board to crash, and most smart locks on the market restart by default when the chip crashes, and automatically unlock after restarting.

So those inferior smart door locks have no power to fight back in front of this little black box.

Fortunately, many mainstream door lock companies are paying attention to this problem. 85% of the door locks tested can prevent small black boxes. Basically, the circuit design is improved, and the voltage regulator module is added to prevent the impact of high voltage.

So everyone should choose formal channels and big-name manufacturers to buy smart door locks.

Well, of course, this is what the big smart door lock manufacturers said.

They will directly use the small black box for security testing at various security door exhibitions.

How to test it is to put together some low-quality door locks and high-end "friends" door locks, as well as higher-end smart door locks that I want to launch.

The result of the test is of course that inferior and high-end "friends" are rubbish, open at the touch of a touch, and only their own smart door locks are the most leathery.

In fact, this thing is to adjust the power of the small black box so that the power of the small black box just reaches the standard for opening other locks, and then it is a little bit worse than the safe power of your own door lock, so that you can measure the perfect results.

In fact, selling smart door locks is selling community security.

After all, the community where users who buy high-end smart door locks live is not bad. The access control at the door of the community, the security guards who patrol the community continuously, and the cameras everywhere, even some users will follow the camera at their door. Come, safety is greatly improved.

So this kind of door is not to say how much security has been improved, but that there are fewer thieves.

In addition, there are fingerprint locks. Generally, low-end fingerprint recognition uses LED light to enter the finger, diffuse within the finger and exit from the fingerprint for detection by PD, combined with capacitive fingerprint image collection.

To put it simply, illuminate your finger with a light. After the machine sees the fingerprint, compare it with the fingerprint in the memory.

This kind of door lock only needs to take a little wax and glue and engrave a fingerprint to identify the door lock through these low-end fingerprints.

Wax 1 yuan, glue 80 cents, a bottle of glue can make 200 fingerprint films, each less than 1 cent.

Better smart lock manufacturers will add a living body sensor to fingerprint recognition, which can determine the temperature and capacitance of the finger, and prevent the impersonation of the fingerprint mold.

The grip will also adopt a fingerprint-proof matte design to reduce the possibility of thieves collecting fingerprints.

But it can only be said that it is relatively safe. The safest thing is to live in a community with good security. After all, the agents in the movie often engage in such things.

There are also remote APP unlocking, which is even more insecure for the Internet age.

Before, thieves were required to commit crimes on the scene. This kind of unlocking the whole process may be solved by the thieves drinking ice at home.

Find another partner, and the remote control partner will go in and steal something, that's pretty good.

Even if it is hacked, it will not only be able to remotely control the state of the door lock and obtain the user's mobile phone information, but it can even enter the manufacturer's server in the reverse direction to obtain the mobile phone information of a large number of users who use the brand's smart door locks.

The fun is even greater.

This spy is of course very concerned about his safety, so he uses the highest-level mechanical lock, and even has his own modification. During the rental period, even the landlord cannot enter.

But this kind of door lock couldn't help Tang Chao.

I saw his index finger stretched out and wearing black gloves close to the door lock. When touching the door lock, the tip of the glove index finger liquefied and flowed directly into the keyhole. In the blink of an eye, a matching black key was formed .

Tang Chao turned slightly, and the door lock made a slight noise.

The bug had observed the whole process of the spy opening the door before. The door lock of this door was very quiet, and even the door shaft was very lubricated, and there was no sound when it opened.

Therefore, like in the movie, the door is opened carefully, and the result is a huge rubbing sound to alarm the enemy.

And through the reality of the image sent by the bug at the same time, the other party really has nothing to oppose...

No, fucking, the spy found him!

The spy in the room who was still typing and chatting on the computer quickly froze for a moment, and it was obviously not caused by the conversation. Then he was seen throwing the computer, one roll, another violent jump, then another roll, just roll. Into the bedroom.

The whole set of movements is like moving clouds and flowing water, like wind and wind, which is extremely smooth and fast.

"Boom boom" twice.

With a sound, the other party slammed the bedroom door.

The second sound was that Tang Chao saw that the situation was not good, and walked into the living room and closed the door suddenly.

Then the coat, pants, and shoes shrank instantly and turned into a nano combat uniform!

It's time to do what an assassin is good at!