Overview[1]#

Usability is the ease of use and learnability of a human-made object such as a tool or device.

ISO defines usability as "The extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified context of use."

The lack of Usability causes frustration.

Usability is a Human specific factor.

More Information#

There might be more information for this subject on one of the following:

• Password Authentication is Broken
• Password Periodic Changes
• Password Quality
• Password Statistics
• Public Key Infrastructure Weaknesses
• User Experience

---

• [#1] - Usability - based on information obtained 2016-09-03-