How to read magnetic stripe card information wirelessly 30

Wireless bluetooth collector will do.

Without an interface, the scanning device is equivalent to entering a string of numbers at the current cursor position and clicking enter.

You can open Notepad and give it a try.

You can open the program in this way, and the cursor will locate the textbox where you want to enter the card number to start scanning.

The program receives the Enter button, moves the cursor to the password box, enters the surface, and clicks on the payment button to manipulate the database to complete the payment.

You're talking about a card handle with a magnetic stripe? It's like a bank card.

How does the head read the content?,I don't know how it works.。。 I only know what the meaning of one or two lines of the magnetic stripe is, that is, the magnetic stripe is divided into three logical tracks, the first track, the second track and the third track, just like the hard disk is divided into several logical sectors, but the track division of the magnetic stripe is fixed and cannot be repartitioned by the cardholder.

The content and quantity that each magnetic stripe track can hold are different, for example, the first track can write numbers + letters, but the capacity is not large, and it can only have dozens of words; The first track can only write numbers, and the capacity is a little larger, not much more, the second track can only write numbers in the early 100s, and the third track can only write dozens of numbers.

Magnetic cards are made by evenly coating a sheet of plastic with a layer of magnetic particulate material. The magnetic particles on the newly produced magnetic card are not magnetic, such a magnetic card is like a blank piece of paper, and people need to input some information into the magnetic card before they can use it. So how is the information recorded?

This requires the help of the recording head.

A recording head is a device that generates a magnetic field proportional to the current once an electric current is applied. When a device is controlled to pass the magnetic card through the recording head, the magnetic particles on the magnetic card are magnetized.

If the signal current is changing, this current can express some kind of information, and the magnet on the magnetic card will be magnetized to varying degrees with the change of current. After the magnetic card is magnetized, the card leaves the same magnetic force as the current change law, and the magnetic card at this time also records the information sent by the current, so that it has its identity.

According to pre-set rules, people can know what information is contained on the magnetic card when they need it.

When an electric current passes through the head, a magnetic field is generated to change the magnetic properties of the magnetic substance, such as polarity (the south pole represents 0, the north pole represents 1), so that the data can be recorded and modified.

As for what you asked'What does one, two, three of the head mean? ', I don't even understand what you want to ask Is the hard disk's dual heads, quad heads? A disc has two sides, so a disc has two heads, and so on.

The bank cards that can be read by NFC mobile phones are IC chip bank cards, which cannot be read by traditional magnetic stripe cards.

NFC (Near Field Communication), also known as Near Field Communication, is a short-range, high-frequency wireless communication technology that allows contactless point-to-point data transmission between electronic devices to exchange data.

The technology evolved from contactless radio frequency identification (RFID) and was jointly developed by Philips Semiconductors (now NXP Semiconductors), Nokia and Sony, and is based on RFID and interconnect technologies.

Compared to the currently more widely used Bluetooth technology, NFC is more convenient to use, less costly, consumes less energy, and establishes a connection faster in seconds. However, the use distance of NFC is much shorter than Bluetooth, some are only 10cm, and the transmission rate is much lower than Bluetooth.

It's all a lie, I don't believe you can try it, anyway, I tried it to no avail.

NFC (Near Contact Technology) technology grows a "contactless radio frequency identification" between wireless devices (RFID) and interconnection technology, capable of satisfying any exchange of information between two wireless devices, content access, service exchange, and making it simpler - as long as any two devices can communicate with each other without the need for patches near the cable. This arbitrary "communication distance" between two wireless devices is greatly reduced.

The definition is always boring, but in fact, NFC means: when you hold your mobile phone in front of the poster to promote the concert, close the mobile phone to the poster, it can realize the connection between the mobile phone and the poster**; When you buy a ticket, you can use your mobile phone embedded in your smart card to pay for your fare. This is what NFC wants to bring you to enjoy life.

For membership cards with magnetic stripes, the information on the card can be recognized using a special card reading machine, or it is also possible to directly enter the card number on the membership card for identification.

Membership card refers to the general identification card, including shopping malls, hotels, fitness centers, restaurants and other consumption places of membership authentication, its use is very wide, where it involves the need to identify the identity, can be applied to the identification card.

The information in the magnetic card can be read, which is the corresponding card number or ID, which can be used universally without changing equipment.