It will be a human readable data and not any random number or character.
I can generate Names, Address, City, Country, Credit Cards, Telephone No., Latitude, Longitude, ISBN, Date, Timezone, currency , Email id , domain name , Hex color , Mac Address, zip codes , and pretty much anything and everything.
The generated content will be a realistic looking data and so it will be easier for you to test your application.
Further if you have any doubts you can drop me a message.
Please discuss the project before ordering the Gig.