QUESTION 2 [25 MARKS] You have been asked to design an application for the next generation of mobile phones. The precise technology has yet to be decided upon. The aim of the system is to enable users among elderly people to book tickets for sports events and for concerts using their phone. Universal design means designing for diversity, including users with special needs disabled users, elderly users and children. For elderly user's groups, suggest Five (5) things about how a developer can develop a system to better serve them. [10 Marks] (b) Explains FIVE (5) different principles that you may use to identify the potential learnability problems that might arise for people working with this new interface. Give one example for each principle. [10 Marks] Describe Multi-modal systems vs. Multi-media systems and give example for each system. [5 Marks]