How to open the door without a key

Although the probability of losing the car key is very small, it will always be encountered. I accidentally locked or lost the car key in the car. Is there a way to drive a door without a key?
1. The first time I think of it is the spare key. Now basic cars are equipped with two keys, one is used commonly and the other is spare. However, we must pay attention that the spare key cannot be placed in the car, it must be kept in a safe place at home, otherwise the commonly used key is locked in it, and the spare key is also in the car, so we have to ask someone to unlock it.
2. If the car does not have a spare key at all, you can also ask for help from the 4s shop. Now there are after-sales rescues at the 4s shop, as long as a phone call, wait for the rescue team to arrive in place.
3. The unlocking company is also an emergency method. Remember that the unlocking company must find a qualified regular company. They will show you relevant certifications before unlocking, such as vehicle driving licenses, ID cards, etc. After the verification is true, they will help You unlock. The price of unlocking is high or low, and it is generally priced according to the difficulty of unlocking and the grade of the vehicle, generally around 200-500 yuan.
4. If your location is remote and it is difficult to get support, then you can use violence-smash the glass. Secondly, there are also techniques for smashing glass. Do not smash windshields, especially triangular windows, otherwise the maintenance cost will be very high. Choose the door glass to start, quickly and ruthlessly, don't hurt yourself by glass slag accidentally.
5. After the door is attached, there is a certain gap in the window, or you can tear off the seal of the window, and then use lead wire or string to lower the door key along the window gap and put it on the door bolt Pull back up to open the door.
6. Use your phone to unlock the remote control. This method has a lot of limitations. To use this method, you must ensure that your car has a car cloud key system. Another disadvantage is that if there is no signal in the wild countryside, this method cannot solve this problem.
7. Unlock by car battery. This method is relatively clever and requires you to have a certain understanding of the car, and this method is not suitable for all models. Then the specific use method is to use a conductive metal sheet to touch the positive electrode of the car battery to open the car door, but when using this method, pay attention to your own personal safety, and you must use insulating objects to avoid accidentally hurting yourself.