GPL rules with borrowed application

[Fredrik Lundgren]

Hi all,

Lets say I have developed an GPL'd application and put it on some hardware, 
a pda. I then let someone borrow the pda, and NOT giving him/her permission 
to take a copy of the application. Must I still give that person the source 
code?

If the person pays a smaller amount of money for the time he/she uses the 
pda, does the answer from the previous question still apply?

Sincerely,
Fredrik

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