It's estimated around 10% of New Zealanders have dyslexia.
The learning difficulty can be debilitating but for dyslexic building apprentices - a new gadget is proving to be a game changer.
The Building and Construction Industry Training Organisation is rolling out C-Pen readers - devices which can scan and read out text.
Rhys Williams is a building training advisor - he's been in the industry for 40 years and describes himself as profoundly dyslexic.