Learn How Credit Card Readers Work
A portable credit card reader has now become a widely-used device because there are now a lot of those who are depending on the credit cards rather than bringing cash. There are now so many of those who are using plastic money rather than cash. The debit cards as well as credit cards are being used by the shoppers since they are very impressed with the type of convenience that they get from just paying through their card rather than bring a big amount of money and also pay for the costly purchases. The debit card or the credit card reader are required in various commercial retail shops. The credit card is definitely useless when there are no credit card readers. Because of this, the credit card companies encourage and bring tie-ups and also deals for the manufacture as well as the distribution of the card readers.
The magnetic card reader technology is actually based on the use of the microcontrollers. Before you try to comprehend how a portable credit card reader functions, you should first know how the magnetic card is being encoded with the needed information that is then read by the card reader.
You should first know that credit cards have magnetically encrypted being written in them. Such code is being encoded on the card, in three strips which differ in their bit density. Such code is encrypted in the manner that no other card reader can read and this is also exclusively supplied with a decryption key.
The process in making the magnetic cards comes with a standard now and all of them are made in the same way. The three magnetic strips have 79, 40 and 107 characters. You have to remember that the data that is written in the strips utilize the technology which is called Two Frequency Coherent Phase Recording. The data written will vary according to the magnetic card’s utility. You must know that the magnetic card can be anything like the credit card or an official RFID card. The track of the magnetic card comes with the alphanumeric data and the rest are actually encoded with numbers. There are bits in the strip code which tell the card reader from where to begin reading or to stop reading. They are referred to as the sentinel bits.
As already mentioned, the portable card reader is a kind of microcontroller device which is embedded with software and also hardware which are made to read the magnetic strips on the cards. This has a read head, one for each track which reads the encrypted code. To get the card read, this should be swiped using the credit card reader. The reader is actually programmed to authenticate a card. The credit card reader comes with alphanumeric keypad for entering the details of the transaction before and after the card is swiped and then read.