The device works on an ordinary Windows mobile phone, designers say
New software which can be used through a mobile phone is helping people with reading difficulties.
The software can take snaps of text or writing and then read it back out loud.
The technology, which costs several hundred pounds, is being trialled by teachers and children at Bristol's Monks Park School.
A spokesman for designers Mobispeech said similar devices had been in use on computers for some time but it was now available on mobile phones.
A spokesman for the school said it was already making a big difference to the way children were being taught.
Neil Milliken, of Cambridge-based Mobispeech, told BBC News the technology was based around the mobile phone.
"There are similar software solutions available for desktop PCs," he said.
"However, if you need software to help you read because you have dyslexia or literacy difficulties or have trouble understanding written language, then you need the help wherever you are."