CardTool Checks credit card numbers for validity
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CardTool Description

CardTool is a tiny and portable application that you can use to check the validity of credit card numbers. It comes in handy if you have lost your credit card and want to verify if the account is still active, to make sure looking for it is worth your while. Since this is a portable application, installing it is not necessary. It means that you can drop the EXE file anywhere on the hard disk and click it to run. It is also possible to save CardTool to a USB flash disk or similar storage unit, in order to run it on any workstation with minimum effort. An important aspect to take into account is that the Windows registry does not get new updates, and leftover files are not kept on the HDD after eliminating the utility. The interface consists of a single window with a plain and simple layout, where all you have to do is write the card number and press a button to check its validity. A message with the results appears on the bottom part of the panel. In addition, you can clear the box, as well as use the Copy and Paste functions. CardTool also provides a tool for generating random card numbers. It is necessary to specify the preferred number of digits and card service, along with a prefix. There are no other options available through this program. The application has a good response time and generates results swiftly and without error, using very low CPU and RAM. It has minimal impact on computer performance and doesn't disrupt user activity. Although it has not been updated for a long time, it works smoothly on newer operating systems. All in all, CardTool delivers a straightforward solution to verifying the validity of credit card numbers.

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