Assistive technologies can range from "low-tech" to "high-tech" options to aid communication for those with autism spectrum disorders. "Low-tech" options include picture exchange systems, dry erase boards, and laminated photos. "Mid-tech" devices include tape recorders, voice output aids activated by touch, and language masters with recordable sound strips. The most complex "high-tech" options are sophisticated voice output devices that allow the user to create messages and produce synthesized speech.