Take stock of cars with digital keys Not all of them are electric vehicles

[Aika Car Shopping Guide Original]

At present, with the outbreak of new electric vehicles, the relationship between automobiles and technology products is becoming more and more close, the form of car keys of many new cars has changed, and consumers have become accustomed to card-type car keys, including new car brands such as Tesla, Xiaopeng and AITO, as well as traditional car brands such as BMW.

Turning a mobile phone into a "car key" is indeed very convenient to reason, because modern people have long gone through the life of getting on the mobile phone. The mobile phone key is only the carrier of the digital key, and the technology behind it is different. Today we will talk about the current "digital key" with mobile phones as the carrier, and the three forms of technology behind it, namely: Bluetooth, NFC, and UWB ultra-broadband technology.

Key points to increase unlock rate:

1. The Bluetooth function of the phone is always on

2. Authorized car brand apps always allow access to phone location

3. Allow car brand app self-launch and background activities

4. Lock the car brand App in the background to prevent being "killed" in the background

Bluetooth key products, applied in the car unlock, lock, the biggest advantage is convenient and fast, as long as we go out with the mobile phone, it is equivalent to bringing a car key. For us whose mobile phones have penetrated into all aspects of life.

Then there is the process of using the Bluetooth key, you can really do the "keyless" process without feeling, as long as the mobile phone is installed in the pocket, no need to take out the mobile phone to operate, the door is on, after entering the car, the vehicle is also in the state of "power-on", hanging into the D gear can be set off.

Digital key | senseless unlock is not a dream

◇NFC

NFC's full name is Near-field communication, also known as near-field communication, through a set of protocols, allowing two electronic devices to communicate at a distance of several centimeters. Its technology has evolved based on RFID non-contact radio frequency identification technology, and NFC devices support three modes of operation, analog card mode, reader mode, and point-to-point transmission, of which the "analog card" mode is mainly used in the automotive field.

Analog card mode is widely used

This mode is widely used in our daily life, such as acting as an access control card and a bus card through a mobile phone. Even as a bank card, including Apple Pay for iPhones and "various" Pay for Android phones, these payment functions are based on NFC technology.

The phone needs to turn on the NFC function and get close to the sensing area of the device being used to achieve the function. In the car, the mobile phone key of some models is realized in this way. Their sensing zones are generally distributed in the main driver's rearview mirror housing, and in some models, the sensing zones are located on the B-pillar of the doors.

In addition to the above-mentioned applications of these modes, NFC technology also includes the "card reader" mode, which is also more common in life, such as Android mobile phones support recharging physical bus cards, using the function of reading and writing data in this mode.

In NFC's last mode, peer-to-peer mode, phones can transfer photos, music, and other files in the form of back-to-back snaps (Android Beam), and some cameras also support this feature. Some models of Cadillac support the use of NFC to pair mobile phones with car machines, and this mode is also used.

◇UWB technology:

The technology behind the last type of digital key is just beginning to emerge in the last year or two. Its Chinese name is ultra-broadband, and its full name in English is Ultra Wide Band, hereinafter referred to as UWB.

The technical characteristics of UWB are very distinct, including simple system structure, support for high-speed data transmission, low power consumption, high security, accurate positioning, strong multi-diameter resolution capability, and low cost.

With these features and advantages, UWB is the best choice for the digital key in the automotive field of the future. Around 2019, the Global Car Networking Alliance proposed to incorporate UWB technology into the digital key solution for automobiles, and formed a third-generation digital key solution based on Bluetooth low energy and ultra-broadband technology.

Editor's Comments:

The development process of digital keys in the automotive field is the epitome of the development of contemporary automobiles, from the earliest Mercedes-Benz to propose the concept of keyless entry, to the future will be a large-scale distribution of large-scale "UWB digital keys", everything is moving towards safer and more convenient development.

The first two technologies mentioned in this article have been popularized in the market due to their relatively long introduction time. However, UWB technology has the characteristics of safety and convenience in two-in-one, so more car brands will join this camp in the future. Car brands such as Audi, Volkswagen, Hyundai, great wall and so on have been gearing up, and will launch digital keys based on UWB technology in the near future, which can be seen.

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