As technologies for recording, accessing, and editing sounds (spoken words) become more sophisticated and less expensive, perhaps it will be less expensive to use such technologies than to teach the next generation to read and write.
For example, a spoken word could be recognized and standardized into a particular "speech font", just as typewriters replace idiosyncratic handwriting with standardized symbols.
Labels on products could still use universal symbols for various hazards (e.g. poison). The usual written language information on labels could be stored in spoken form in portable databases accessed by means of the bar code on the product label. The portable databases would output speech sounds.
Street names could be replaced with street numbers, which one can learn to read quite easily even if one cannot read words.
For example, a spoken word could be recognized and standardized into a particular "speech font", just as typewriters replace idiosyncratic handwriting with standardized symbols.
Labels on products could still use universal symbols for various hazards (e.g. poison). The usual written language information on labels could be stored in spoken form in portable databases accessed by means of the bar code on the product label. The portable databases would output speech sounds.
Street names could be replaced with street numbers, which one can learn to read quite easily even if one cannot read words.