Adding audio tags to touch sensors allows a visually impaired person to find the correct control on an enhanced audio player. This is implemented using Arduino boards interfaced with an Android mobile device.
Add touch sensors which trigger audio tags. This helps visually impaired people find their way around a new device. Or you could make an educational toy to help Junior learn what things are called. Or you could add a warning to ‘keep off’ your stuff! Or….
Please note: I copied and modified the Android code from one of the examples in Simon Monk’s book "Arduino + Android for the Evil Genius" to get this all going.