Can Chip Cards be Demagnetized?

Photo: Jonas Svidras @ STEP.CAMERA

Normally no. The introduction of the chip was because the magnetic strip could get demagnetized easily.

However, chip cards can be read easily with a pocket reader. If you have your card in your wallet in your back pocket, it has been shown that your info can be stolen that way.

Many of the new Chip cards are also RFID (Radio Frequency Identification) enabled, meaning they can be energized and read remotely. While usually within 2–4inches, it may be possible for a longer distance.

As to the chip, while protected from normal antistatic shocks, it is possible to apply a high voltage across a couple of the pads and burn it out such as across the GND (Ground) and VPP (Chip Programming Voltage) or VCC (chip Voltage)

RFID works by creating a magnetic field from a coil of wire, usually in a card reader or door badge scanner, but can be carried covertly. For stores preventing theft, at the doors, there will be these stands you have to walk through, although you could easily hide a coil around the frame of the door. As the coil inside the credit card passes through this magnetic field, it generates electricity to power the chip which powers up and transmits its data. All of this happens in less than one second.

Something like this would be built into your passport, credit card, company ID badge, or product theft label. The chip is extremely small and is shown in the middle of the antenna. The larger the surface area of the antenna, and more loops, the more energy you can get from the field you are walking or passing the card through.

To prevent RFID reading when in your pocket, you need one of the card wallets sold for this purpose that has metal plates to block the RFID energy pulse.

linux developement boards

What is the difference between Integrated Circuits and Chip?

Jakob Scherer:
There is no definition of what a chip is, but it typically means an electronic component. A subset of chips are the semiconductor chips and encompass several technologies like Silicon, Germanium, and others as the base material. A semiconductor chip may be a single transistor or a diode or other discrete components with single functions, or it may contain multiple components integrated on a single chip, called an integrated circuit. An integrated circuit may be relatively simple with only a handful of active elements, like logic gate chips, or it could be very complex with millions or billions of active elements, like microcomputer chips or memories. So all integrated circuits are chips, but not all chips are integrated circuits.

William Mays:
I assert that a thick-film integrated circuit, or a thin-film integrated circuit, are not to be called “chips”, the term “chip” is reserved for a semiconductor part.

Jakob Scherer:
You are right. Unless the thick- or thin-film circuit is purely passive, it probably has chips on it, packet or naked.

Oisin Daffyd:
It’s the same difference as there is between a bicycle and a bike, a plane and an aircraft.

A single component by the way is an SMD (Surface Mounted Device) and in over 40 years of experience in servicing, I’ve never heard it referred to as a ‘chip’

Jakob Scherer:
An active SMD device has one (or several) semiconductor chips in it. It could be a single function or an IC chip. I started working about the same time as you for a company that builds automatic machines to put chips into devices. Such machines are called die bonders. They are widely used to pick chips from cut wafers and glue them onto lead frames as the first step to make SMD devices.

How is Apple’s M1 Chip Compared to Intel?

Apple has been working on ARM since before 1993, far longer than anyone other than ARM themselves

Apple helped Acorn Computers co-found ARM (Apple-supplied millions in investment and owned 20% of ARM)

Apple was the first company to actually use an ARM processor in a consumer product, in the 1993 Apple Newton MessagePad

Apple has been working on developing ARM as a next-generation processor since before 1993

Intel has not changed its old fashioned thinking so its processors (and AMD) are still fully dependent on old designs which are huge, run extremely hot, and use massive amounts of power

Apple expended billion of dollars to assemble a world-class chip design team and to put decades of time into creating a processor (family) that uses the latest 21st Century techniques and thinking, to deliver a processor that is faster, smaller, and cooler than all of Intel’s and AMD’s ancient offerings


Apple has developed a better processor because Apple cares enough to invent into creating the kind of processor that Apple customers need and want.

What are the pros and cons of the new Apple M1 chip?

It’s blazing fast. Goes like clappers. Faster, according to benchmarks, than any equivalent Intel offering.

It’s almost unbelievably power efficient, using half the power (or less!) of similar Intel chips.

Its onboard graphics beats most midrange discrete GPUs.

It has a built-in machine learning/neural net processor, something you can’t get at all from Intel or AMD processors.

It is a call to arms for Intel to up their game.

How powerful is the Apple M1 chip?

The M1 was designed for a power-efficient, on-the-go application in Macbooks. So considering that, it’s a superb chip for 90% of the target audience.

Because the M1 chip is an SoC, or “System On a Chip” – and is designed to be task-specific and engineered to work with the operating system, unlike the Intel chips which are “off the shelf” parts.

In short, the CPU (central processing unit), GPU (graphics processor), DRAM (memory), and a few other processors share the same chip. The result is somewhat counter-intuitive – most people would assume separate components would be better-performing, the opposite is true with this chip.


Its integrated design allows the different processors to communicate with each other much faster. There’s less physical space that signals have to travel, and its integrated design makes memory available to both processors.

In layman’s terms, all the necessary resources are within reach. You can reach for a cell phone in your pocket much faster than having to run to a different room to answer the phone mounted on a wall. It requires less energy for the various system components to communicate with each other.

With efficiency comes more speed and less power consumption, and less heat.

However, there are perceivable drawbacks as well. For example, you can’t upgrade your RAM. Certain apps that you could run on an Intel-based MAC (including an emulated instance of Windows x64) aren’t going to happen.

In short, it’s like a super-duper iPad or iPhone that is designed to run macOS – and since it was designed specifically for the task, it can do it better than most Intel chips.

I hope this was general enough to understand.

All of the reviews have proven that Apple’s Apple Silicon processors are in fact much more powerful than Intel’s CPUs.

linux developement boards

What do you think of the following five x86 mini board?

The 5 best Intel & AMD single board computers for makers

1. Rock Pi X – x86 on the cheap

2. ODYSSEY-X86J4125 – Intel meets Arduino & Raspberry Pi

3. UP Single Board Computer Family – Cherry Trail to Tiger Lake

4. ODROID-H2+ – Affordable 2.5GbE networking

5. UDOO Bolt – AMD SBC’s for makers

Here are some of our panelists’ comments, also welcome you to join the discussion.

Tonny: The sanest one is android H2+

Piotr: Or just any mini ITX or thin mini ITX as those custom boards have really bad pricing.

Dgp: I haven’t seen many consumer ITX boards with things like GPIO broken out.

Piotr: you can use any Arduino/Microcontroller board you want. And depending on the motherboard it may have COM/Serial GPIO or on the back I/O. And if you go on Aliexpress looking for pico/nano ITX boards then you can ones with lots of serial ports and alike.

Anything that isn’t Raspberry, Arduino, or MicroPython will have tragic support for third-party libraries so even if a custom SBC has GPIO – if it’s not using pre-existing software stack it will be hard to use with more complex stuff if at all.

Gerald: Mini PCs or better a Motherboard with embedded CPU bundle make more sense price-wise than these SBC options

Anonymous: A weak CPU is fine if the price is right.

Odroid-H2+ looks like the sweet spot to me. If they keep about the same price point but update it with new Atom CPUs in the future (Tremont / Jasper Lake, then Gracemont, etc.), it will get very good.

Chas: I think the Alix/APU boards from should also be on this list.

Willy: That’s a pretty good point, they do provide rich connectivity and good characteristics at quite an affordable price! And they do have an enclosure and a console port, both of which are often the last missing points to put an SBC in a small production.

David: All of the PC Engines x86 compatible 500 MHz AMD Geode LX800 based ALIX boards are currently marked End Of Life (EOL). I suspect the old LX800 part is the reason. The faster x86 compatible AMD GX-412TC quad-core Jaguar Architecture-based APU2/3/4 boards are still current.

Garry: Each SBC has its advantages and disadvantages, the key is what you need.

Arduino UNO development board

How to make a fingerprint sensor door lock with Arduino UNO development board!

Learn how to use the sensor module, I2C LCD, and Arduino UNO development board to make a fingerprint-controlled door lock.

In this article, I will show you how to make a smart door lock using a fingerprint sensor and Arduino UNO. The door lock will open only when the fingerprint scanned by the user matches the fingerprint recorded on the system. If the fingerprint entered is wrong, the door will remain closed.

Required hardware

● Arduino UNO development board

● Fingerprint sensor module

● I2C LCD display

● Relay module

● Door lock

● 7 to 12V power supply

● Jumper cable

Circuit diagram and description

First, connect the fingerprint sensor to the Arduino UNO development board. Please make sure that the fingerprint sensor you use can work with Arduino through serial communication.

The default pins for serial communication on Arduino UNO are pin 0 (RDX) and pin 1 (TXD) of the board, but we will use other pins for serial communication. In this article, we will use the SoftwareSerial library in the code.

The following are the connections required between the fingerprint sensor and the UNO development board:

Then connect the I2C LCD module to UNO. The connection is as follows:

Then, connect the relay module to the Arduino UNO as shown in the circuit diagram below.

Insert picture description here

Fingerprint door lock circuit diagram.

Insert picture description here

To control the door lock, you need a 7 to 12V battery-I used three 18650 batteries.

For more information, please refer to the following link:

face development board use

RK3566 | 2+8G(16) Face Recognition Development Board

Smoothly adapt to a variety of face recognition algorithms, efficient response to detection speed, recognition speed <1S, accuracy rate> 99.77%, equipped with mask recognition, automatic alarm for abnormal body temperature, and support for personalized customization.

Application scenarios:

It is widely used in communities, office buildings, schools, hotels, scenic spots, stations, and other public service places. For example smart channel, artificial intelligence gate, smart attendance, smart access control, etc.

artificial intelligence technologies board

What are artificial intelligence technologies?

1. Big data

Big data, or a huge amount of data, refers to the massive, high growth rate, and diversified information assets that require new processing models to have stronger decision-making power, insight, and process optimization capabilities.

2. Computer vision

Computer vision refers to the use of cameras and computers instead of human eyes to identify, track, and measure targets, and further graphic processing, so that computer processing becomes more suitable for human eyes to observe or send to the instrument to detect images.

3. Voice recognition

Speech recognition technology is a high-tech that allows machines to convert speech signals into corresponding texts or commands through the process of recognition and understanding. Speech recognition technology mainly includes three aspects: feature extraction technology, pattern matching criteria, and model training technology. Speech recognition is the basis of human-computer interaction, which mainly solves the problem of making machines hear what people say clearly. The most successful implementation of artificial intelligence is speech recognition technology.

4. Natural language processing

Natural language processing generally includes two parts: natural language understanding and natural language generation. Realizing natural language communication between humans and computers means that computers must not only understand the meaning of natural language texts but also express given intentions in natural language texts. The former is called natural language understanding, and the latter is called natural language generation. Natural language processing is an important direction in the field of computer science and artificial intelligence.

5. Machine learning

Machine learning is to make machines have the same learning ability as humans. It specializes in studying how computers simulate or realize human learning behaviors in order to acquire new knowledge or skills, and reorganize the existing knowledge structure to continuously improve its own performance. It is artificial The core of intelligence.

advertising development board

The future diversified development of the advertising machine industry

Since the development of the advertising machine industry, it has shown a diversified form. What are the changes in the advertising machine industry?

1. The content is more personalized

With the development of technology, understanding the relevant information of the audience group can better provide targeted content, and combined with the development of the mobile Internet, the content will be more personalized. In the future, advertising machine display content will be more targeted and can be associated with many dynamic factors, such as weather, inventory, and the latest information.

2. Wireless data network

The same type of network connection as a smartphone will effectively simplify the editing of advertising machine information, and information can be updated at any location. The wireless network will allow the LCD advertising player to have a faster and safer network connection, just like smartphones and tablet computers. For example, mobile advertising machines can be used in conjunction with mobile electronic devices such as mobile phones and tablet computers, and the two networks can be shared.

3. Mobile smart interaction becomes mainstream

In the future, interactive functions will become the mainstream of the advertising machine industry. It can interact with consumers through visible and vibrant content, and companies can also use coupons and promotional activities. Combined with the advertising machine, it can provide consumers with the content they need, simplify the consumer’s participation process, and let them change from passive reception to active reception. Just like the mobile big computer TV advertising machine, it integrates all the functions of large-screen computers, high-definition TVs, high-definition displays, high-definition advertising machines, and other products, and can be used in conjunction with mobile electronic devices such as mobile phones and tablets to achieve human-computer interaction. Features. In the future, the latest single products, best-selling products, discounts and promotions, news events, popular online videos… and WeChat promotion and interactive activities that increase user viscosity can all be easily completed in the advertising machine system.

embedded industrial panel computer

The embedded industrial panel computer is an industrial control computer specially designed for the industry.

It is equipped with an embedded human-machine interface configuration software HMImaker to develop a display operation interface. It has various configuration controls, a programmable database, and 0 codes. For example, making PPT is simple and fast. . It has a single-chip microcomputer protocol, Modbus communication protocol, I2C communication protocol, Siemens, Mitsubishi, Delta, Omron PLC protocol, etc. It supports various single-chip microcomputers and PLC use and provides the best solution for man-machine interface and production process control.

With the performance of industrial tablet computers getting better and better, many industrial sites have begun to adopt lower-cost tablet computers, and the tablet computer market has also undergone tremendous changes. People are beginning to prefer more humane touch-sensitive tablet computers. Therefore, in the industrial field, the tablet computer with touch function will be the future trend. The industrial touch panel computer is also a kind of industrial computer. Compared with the ordinary industrial computer, its advantages have the following points.

1. The front panel of the industrial touch panel computer is mostly made of aluminum-magnesium alloy die-casting, and the front panel reaches the NEMA IP65 protection level. Sturdy, durable, and lightweight.

2. The industrial touch panel computer is small in size and easy to install and maintain.

3. Beautiful appearance and wide application.

Applicable conditions:

Industrial tablet computers are mostly industry-specific specifications, not standardized products, so there are compatibility issues between systems. At the same time, the product must meet the special needs of customers for the working environment, such as temperature (humidity), waterproof (dust), voltage stabilization system, uninterruptible power system requirements, etc. for special design and adjustment, so manufacturers must have considerable research and development, production, and testing. , Marketing and system integration capabilities, with certain technical thresholds.

Industrial tablet PCs are 7 to 19 inches in size and use ARM-based processors. They are available in various styles such as sheet metal, aluminum alloy, touch screen, non-touchscreen, fan and fanless, etc., and can be embedded or wall-mounted There are various types of installations such as portable, desktop, telescopic and mobile, and there are also various products such as 4:3 square screen and 16:9 widescreen, temperature and humidity recorder and barcode scanner for customers to choose from, to meet the increasing diversification of various industries The need for specialization.


Different from general commercial computers, the industrial tablet computer series are rugged, shockproof, moisture-proof, dustproof, high-temperature resistant, multi-slot, and easy to expand according to environmental characteristics. It is the best platform for various other applications in various industrial control, traffic control, environmental control, and automation fields.

Industrial tablet computers are mostly used by the industry and must be operated in special environments or disconnected for a long time. For example, production line automation equipment, data switches in telecommunication room, monitoring equipment, corporate network security servers, navigation systems, etc., must Continuous and stable operation for a long time without the interruption of the crash, otherwise, it will cause huge losses, so the stability requirements of the computer system used are particularly strict. It can be seen that the requirements for industrial tablet PCs are much higher than those for commercial use. Another feature of industrial panel computers is that most of them are used with configuration software to realize industrial control.

Main application areas:

1. The industrial site can be embedded in the machine, cabinet, or placed on the operating table, as a man-machine display operation interface.

2. Used in various fields such as telecommunications, electric power, multimedia, national defense, automation equipment, manufacturing, etc., leading numbers are used as man-machine interface, thin client, communication, and control terminals such as PLC and POS.

3. Digital hospitals serve as bedside service terminals and outpatient terminals to improve the hospital’s service and management level.

4. Use as media (advertising) players or query terminals in public places such as banks, shopping malls, hotels, railway stations, buses, subway stations, parks, etc.

  • High-end residential quarters are used as home service terminals to realize intercom, message, cost inquiry, product ordering, household appliances management, temperature and humidity control, etc.
Android development board

How to choose an Android development board?

If it is only an application, just find a mobile phone and use it. For example, an old mobile phone with a debug download cable can be used for development. If you are only working on applications, it does not seem necessary to buy a special development board, unless your application involves hardware such as various sensors.

However, if you are working on the underlying platform, there should be many platforms that can run Android, depending on the specific target positioning and hardware selection route. For example, BeagleBoard/PandaBoard are both TI platforms, especially PandaBoard is relatively high-end. If you are a product, it is estimated OMAP4’s CPU price and supply are both problems, and OMAP3 is okay. For example, the Atmel 9G45 platform can also run on Android, but the 9G45 is still the ARM9 platform, which is good at stability and is more suitable for industrial control products.