A sip-and-puff switch is an assistive device that allows individuals with limited mobility to control electronic devices using their breath. By sipping or puffing air into a straw-like tube, users can send signals to operate items such as computers, wheelchairs, or communication devices. This technology is particularly beneficial for people with conditions like spinal cord injuries or neuromuscular disorders. These switches work by detecting changes in air pressure created by the user's breath. The signals can be customized to perform various functions, making them versatile tools for enhancing independence and improving quality of life for those with disabilities.