Hello. I am creating an electronic device for a community service project that helps visually impaired children learn colors and their braille spelling. The device comes in two parts and there is a data wire connecting the parts. When it comes to the jack to plug in the connecting wire, there are two options: a round 3.5mm audio style plug, or a USB type A plug.
Will anyone give me insight to which plug is is best for children with visual impairment.
Although the USB plug is preferred for technical reasons, my thinking is the audio cable is a better choice because it has no orientation requirements which makes it less prone to damage. The downside is that there may be confusion whether or not the port is for audio, which it is not.
The links are to extra large images of the two types of plugs:
http://upload.wikimedia.org/wikipedia/commons/9/96/USB-Connector-Standard.jpg
http://upload.wikimedia.org/wikipedia/commons/8/8b/Audio-TRS-Mini-Plug.jpg
thanks!