Verification & Validation

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Input verification involves the process of confirming that the data has been as it was intended by the user or through automated input such as a barcode scanner. Typical techniques include duplicate entry, which is often used for setting, and checksums & hashing, which are particularly important for barcode entry and scanning. This verification helps ensure that the information collected is accurate and error-free.



When a website asks you to enter your password twice during the signup process, it is often referred to as "Password Confirmation" or Verification. This practice aims to reduce the risk of users making typos when entering their password for the first time. The purpose of a checksum is to help detect errors, ensure integrity, and provide a mechanism for verifying the accuracy of transmitted or stored data.



Input validation is a process used in computer programming to ensure that the data entered by a user meets certain criteria or . Various types of input validation include range checking—ensuring that the entered value falls within a specific range—format checking to verify that the input matches a specific , and length checking to limit the length of input. Each of these validation methods contributes to better data management and enhances security by preventing malicious attacks.

Keywords

password | entered | data | password | format | requirements |