What sort of technical improvements can I make to my computer-based system?

This is for my IT work and basically we are making a computer based system which you get in shops/airports/restaurants and so on. Mine is on an airport so I have a page for tickets, passengers, flights and so on...

In the evaluation part of my project we are meant to include TWO technical improvements that I can make to my system.

One of these is meant to be a hard drive but I don't know how to explain how this will improve my system. So can anyone tell me how to explain about how a hard drive will improve my system?

I also need one other technical improvement to my system.

I'm not asking you to do it for me, just give me some ideas and I will expand on it myself.
Thanks!
 
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