S1: I know there is a new self-issue system in the library (Statement 1)
S6: The new self-issue system is easy to use (Statement 6)
S9: I understand the system on-screen help facility (Statement 9)
S16: The self-issue system saves me time (Statement 16)
S3: I am confident that my books are off my library card when I use the self-issue system (Statement 3)
S4: I would rather use the self-issue system than go to the desk to the desk to return and take out my books (Statement 4)