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detecting credit card types


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6 replies to this topic

#1 madman411  novice

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Posted 28 January 2014 - 05:13 PM

I'm not sure which forum this should be posted in, so if a mod could move this if necessary, I'd appreciate it.

 

I'm wondering if it is possible to have FMP detect what type of credit card is being entered just based on the card numbers? I have seen other systems able to detect what type of card was entered based on, I'm guessing, the amount of numbers entered and what order they're in. The same goes for routing numbers on bank accounts. I would want the institution/card type's logo to appear upon the information entered into the correct field, so a related record(s) containing all this information would need to be created.

 

Is this secure information? Is anyone aware of a resource that would help software developers implement such a system? I'm not even sure how to word a Google search to find the credit card information. I'm sure institutions like Wells Fargo provide routing number information once you log into their site. 


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#2 Rick Whitelaw  Time Saver

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Posted 28 January 2014 - 05:46 PM

I could be incorrect, but I believe the card type is identified by the first group of numbers. Also, familiarize yourself with the Luhn formula which will identify numbers that can't be issued. It won't, however, tell you if an issuable number HAS been issued. Good first line of defense.
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#3 comment  consultant

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Posted 28 January 2014 - 06:15 PM

http://en.wikipedia....umbers#Overview


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#4 madman411  novice

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Posted 28 January 2014 - 06:31 PM

Thank you, fellas. Good starting point.


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#5 Fitch  Imaginary friend

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Posted 29 January 2014 - 09:40 AM

Don't roll your own credit card system. Use stripe.com or something similar. My 2¢.


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Tom Fitch :: Portland, Oregon :: Fitch & Fitch: FileMaker consulting

#6 madman411  novice

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Posted 03 February 2014 - 08:07 PM

Don't roll your own credit card system. Use stripe.com or something similar. My 2¢.

 

Fitch, not looking to create a credit card system. I'm just generally curious at how the computer can detect if the card is a visa/mastercard, etc.


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#7 Lee Smith  I like the v13 layout tools

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Posted 03 February 2014 - 08:58 PM

See if this helps.

 

Credit Card Validator


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