If the user perceives that data entered into a website is insecure (if it is perceived that it can be hacked, stolen or tampered with), how is the usability of the site affected?
This specific question is about the impact on site usage rather than site usability.
- The perception of security doesn't effect how easy a form is to fill out.
- The perception of security does, however, effect how likely a user is to fill out that form.
Sites that request sensitive or Personally Identifiable Information should both be, and feel, secure. If a site doesn't feel secure, the user will be dis-incentivized to use the site. The user will be more likely to distrust the site, which will build barriers between the user and requests to provide PII or to provide access to sensitive information.
Therefore, the site must implement many visual and interactive elements that communicate trustworthiness.
- Use of the color blue in the page design to represent professionalism and authority.
- Real-time validation of form elements.
- Simple, grammatical alert, warning and error messages.
- Valid and current SSL certificates to enable HTTPS communications.
- A simple, gold-standard domain name and TLD.
- Most of all, predictable reactions to common interactions.
This will encourage trust in the site, which will increase the perception of security, and increase usage/compliance.
If we want to talk about usability rather than usage, reversing the logic of the question gets to the topic of usability. Rather, I'd ask:
How does usability effect if a user perceives that data entere into a website is insecure?