From the BBC:
His eleven-year-old son, Callum, is non-verbal and uses his father's invention to speak.
Speaks4Me was on show at Naidex 2010 - the annual disability exhibition at the NEC in Birmingham.
Mr Lodge's system runs on any device that can run the Windows XP, Vista and Windows 7 operating system.
It uses the concept of dragging and dropping images from one area of the screen to another to form sentences.
The user then presses a speech button to "verbalise" the sentence.
"Callum has been using Speaks4Me for some time now and he has already been able to create some very expressive sentences," Mr Lodge told the BBC.
Examples include, "I want a drink of juice", "I want to go outside", and "I feel tired".