US Patent 11132432 Tactile challenge-response testing for electronic devices

Systems and methods described herein provide tactile challenge-response tests for limiting access to electronic resources associated with a computing system. When a user requests access an electronic resource, the system activates an alternating voltage in an electrode layer for a display associated with the system to generate an electrovibrational pattern on the display and prompting the user to perform a touch gesture upon the affected region of the display to allow the user to perceive the electrovibrational pattern via the user's sense of touch. Next, the computing system renders multiple different visual patterns on the display and prompts the user to select the visual pattern that matches the electrovibrational pattern. If the user correctly selects the visual pattern that matches the electrovibrational pattern, the system allows the user to access the electronic resource.