Magnetic cards
Magnetic cards are highly popular, which are also relatively cheap, used wherever memory functionality is necessary. The data to be included in the card are encoded in the strip with magnetic coders. For using such cards, a magnetic card reader is necessary. Such strips have three recording tracks. We usually use only one of them. However, if additional protection is necessary for the information or specific rooms, appropriate strings of characters may be easily encoded even in all three tracks. These may be strings of digits as well as strings of letters and digits. Everything depends on the importance of protection and security of a specific element, entry or building.

As regards magnetic cards, these may have two different types of magnetic strips: LoCo and HiCo. What are the differences?

LoCo has a low coercion coefficient ( lower resistance to demagnetisation)
HiCo has a high coercion coefficient ( higher resistance to demagnetisation)
The decision will depend on which type is recognised by the reader. This information is provided in the technical characteristics of the device and has to be stated by the producer.

The magnetic strip has 3 recording tracks. Digits or letters and digits may be encoded in them.
Encoding of the strip is possible according to the following standard:

Track 1:
Length: 79 characters including transmission start and end markers and LRC
Recording density: 8.27 bit per mm (210 bit per inch)
Character set: Spacja ! ” # $ % & ‘ ( ) * + , – . / 0 1 2 3 4 5 6 7 8 9 : ; ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _
Start marker: %
End marker: ?
Separator: ^
Only uppercase letters are allowed. Lowercase letters will be automatically converted into uppercase ones.
Track 2:
Length: 40 characters including transmission start and end markers and LRC
Recording density: 2.95 bit per mm (75 bit per inch)
Character set: 0 1 2 3 4 5 6 7 8 9 : ; ?
Start marker: ;
End marker: ?
Separator: =
Track 3:
Length: 107 characters including transmission start and end markers and LRC
Recording density: 8.27 bit per mm (210 bit per inch)
Character set: 0 1 2 3 4 5 6 7 8 9 : ; ?
Start marker: ;
End marker: ?
Separator: =