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

Enter the name of the required converter (see table below) and click Update

To set at the device level:



Devices -> [select device] -> Advanced Config Editor



Search for "ext-device.card-no-converter"



Enter the name of the required converter (see table below) and click Update

Standard Converters

Convertor

hex2dec

dec2hex

ascii-enc

javascript:<path> Advanced: Define a custom conversion function in JavaScript (see

It is possible to chain or pipeline converters by delimiting with a pipe (|). For example,

ascii-enc|hex2dec will first unpack the encoded ASCII number then convert it to a

decimal.

Tip: Not sure which converter to use? Often trial and error is a good approach. After

presenting a card, the number will appear in an application logger message with conversions

applied (assuming the card is unknown to the system). Try different converters and inspect

the resulting numbers in the application log.

Using custom JavaScript

If the inbuilt converter functions are unable to meet the requirements, it is possible to define

your own function using JavaScript. This is an advanced exercise and it is expected that

any implementer be familiar with programming and JavaScript. To implement your own

converter:

1. Create a file text file [install-path]/server/custom/card.js

2. Define a single JavaScript function in this file called "convert" It should accept and

return a single string. Here is a trivial example:

function convert(cardNumber) {

return cardNumber.substring(3,10).toLowerCase();

}

3. Enter a converter in the form: javascript:custom/card.js

Revision: 19

Description

Convert a hexadecimal (base 16) encoded card number to

decimal format. Hexadecimal numbers usually contain 0-9 and A-

F. This will convert "946EBD28" to "2490285352".

Convert a decimal encoded card number to hexadecimal format.

This will convert "2490285352" to "946EBD28".

Unpack an ASCII encoded card number string. E.g. given the

number "3934364542443238", the ASCII code "39" is converted

to 9, "34" -> 4, "45" -> E, with the entire number resulting in

"946EBD28".

below)

2012-10-26

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