Evaluating touchscreen PIN entry with visually impaired users

Touchscreens on self-service terminals such as ATMs (automated teller machines) can present accessibility challenges, particularly for people with visual impairment. We present a study evaluating gestural interaction methods... [ view full abstract ]

Touchscreens on self-service terminals such as ATMs (automated teller machines) can present accessibility challenges, particularly for people with visual impairment. We present a study evaluating gestural interaction methods for entering a Personal Identification Number (PIN) on an ATM touchscreen, a particularly challenging task due to the additional security requirements prohibiting most auditory feedback. The concept with tactile markers provided significant benefits: a fixed tactile reference point to aid orientation and additional support for people unfamiliar with touchscreens.