CODEWITHSUNDEEP
c#asp.net
Patrick Developer
Patrick Developer

Reputation: 369

Differentiating between user input methods.

I am currently working on a web application using ASP.Net (C#) for assigning cards.

A user can swipe a card using a magnetic swipe card reader to fill in a text box, and depending on the card existing in the application database, attach a card to a customer profile.

The same process can be completed if a user manually enters the card number into the text box without assistance.

To prevent user error, I am looking into adding a validation number for each card.

My problem concerns differentiating between manual input versus a card reader. Obviously a user is not going to want to enter a validation code manually if they have swiped, whereas manual input should always be checked with the validation code.

I have tested using a timer when a user is focused on the card number text box to determine which input method has been used, but before I go ahead with this implementation I want to check for any better alternatives.

As a final note, the user could be repeating this process many times.

Upvotes: 0

Views: 143

Answers (1)

Pheonyx
Pheonyx

Reputation: 851

Did you write the code that reads the card? If so...

You could edit that code to also set a hidden check box on the page that indicates if a validation code is required. This being the case the validation code box becomes available to the user to enter said code. This way you check that a code is required and that a code has been provided before submission.

Upvotes: 1

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