Also known as Augmentative and Alternative Communication (AAC) is any type of communication strategy for people with a range of conditions who have significant difficulties speaking.
There are two main types of AAC – aided AAC and unaided AAC.
Aided AAC is any external item used to aid communication (e.g. object symbols, communication boards, books, key-ring mini-cards, wallets, speech generating device, computer, mobile phone, tablet). Aided AAC includes both high technology systems and low/light technology systems.