the effectiveness, efficiency and satisfaction with which specified users achieve specified goals in particular environments. This covers ease of use and learnability of software applications, websites, processes, or anything a human interacts with.
- Stackoverflow.com Wiki
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When writing forms for your ASP.Net MVC websites the common approach to ensuring only real people use them site is to simply add an Html.AntiForgeryToken() to your form’s view mark-up and controller and be on your way.
Usability is probably one of the most important thing to consider while thinking about getting your web design and your business to the next level.
Your job is to protect the user from bugs and usability issues by catching them before they are shipped.
Form a better understanding of interaction through using the IxD Checklist by Amit Jakhu and Aaron Legaspi from Myplanet.
Finding the balance between security and usability
To design the best UX, pay attention to what users do, not what they say. Self-reported claims are unreliable, as are user speculations about future behavior. Users do not know what they want.