It's also not clear if this is just another get rich quick scheme using poor africans as fodder. When they start talking about selling "inexpensive" devices that are "affordable" your bullshit detector should go off. A while back someone was flogging a solar powered usb battery used to charge cell phones that was going to "revolutionize" etc., these poor african communities for the low low price of $125 or whatever. A quick check of amazon.com revealed a product with identical specs retailing for about half that much. Hence actual cost was probably 30% or more lower.
In this case, puppy linux has had this capability for several years and thumb drives bought in bulk cost pennies. Exactly whom does this project benefit the most?