Amazon Alexa

A cloud-based voice assistant developed by Amazon, available on Echo smart speakers, Echo Show smart displays, and third-party devices. Users interact with Alexa through wake-word-activated voice commands to perform tasks such as setting reminders, playing music, controlling smart home devices, searching for information, and managing calendars. Research has shown that Alexa and similar voice assistants can serve as cognitive aids for people with traumatic brain injury, older adults, and individuals with motor disabilities, though challenges remain with speech recognition accuracy for atypical speech patterns and the cognitive complexity of multi-step commands.