Which of the following is NOT a characteristic of high-tech AAC devices?

High-tech Augmentative and Alternative Communication (AAC) devices often come with advanced features designed to assist individuals with communication difficulties. While they play a crucial role in enhancing communication, their ease of use can vary significantly depending on the user's individual needs and abilities. Some high-tech devices may have complex interfaces that require a learning curve, making them not inherently easy to use for every individual.

In contrast, these devices are characterized by other features that are typically universal among them. High-tech AAC devices do require electricity to function, which is a fundamental aspect of their design. They also utilize a range of symbols, enhancing the user's ability to communicate across different contexts and messages. Furthermore, these devices are designed specifically to give a voice to users who may otherwise struggle to articulate their thoughts, making them invaluable in supporting effective communication.