Older adults in the US are the fastest-growing demographic group, and also the fastest-
growing group of internet users [1]. Many computer related tasks, such as user …

Effective user authentication applications are crucial to protect information security. In
response to the growing number of threats to data security, a wide variety of authentication …

Traditional alphanumeric passwords have both security and usability challenges.
Passwords that are more secure are usually more difficult to remember. We propose a …

As vital services are moving increasingly online, it is important that everyone, including older
people, can access them. Both high risk and many low risk online services require password …

The most common approach to authentication involves a password entered on a keyboard
with letters, numbers and special symbols. Recently, however, touchscreen devices have …

Research on gesture passwords suggest they are highly usable and secure, leading them to
be proposed as a strong alternative authentication method for touchscreen devices …

Alphanumeric passwords remain a ubiquitous means of user authentication, yet they are
plagued by a fundamental problem: Secure passwords are difficult to create and remember …

Traditional text password authentication is widely used to gain access to computing
resources. Older users find the cognitive effort, and manual dexterity skills needed to use …

Free-form gesture passwords have been introduced as an alternative mobile authentication
method. Text passwords are not very suitable for mobile interaction, and methods such as …

Numerical passwords (or PINs) are a commonly used “what you know” password
mechanism. However, numbers could be difficult to remember, and particularly for emergent …