Aging population

It is a fact in most of the developing countries that the population average age is increasing. This also means that you should consider designing your applications for this growing and affluent group. An example can be eBook reader such as Amazon Kindle that is vastly popular in USA among senior citizens because of the following characteristics:
it is super light and thin
many senior people are avid readers and have time to read
you can carry a number of books with you at all times
the fonts are adjustable, bigger than book and easy to read
ePaper battery lasts for weeks
In comparison iPad has not made the same impact on the same group because of weight, price, glossy screen and complexity of multiple applications.

Uki's Google Java Technology blog