By offering contextual error warnings while users input data or make selections, systems can guide users toward correct actions without disrupting their workflow. This proactive approach to error management not only saves time but also improves user satisfaction by making interactions smoother and more intuitive. For example, imagine users filling out an online payment form. If they enter an expired credit card date, the system immediately highlights the error and displays a message like "Please check the expiration date." This instant feedback prevents users from submitting the form with incorrect information, avoiding transaction failures and the extra time needed to correct the error.

For more complex validations that may require extensive effort, such as password inputs, a simpler method is to provide helper text where mistakes are most common. This text can guide users in creating valid passwords by specifying requirements like character count and symbol use before they start typing. Helper texts help prevent errors right from the start.