Answer: Stylus
Explanation:
Stylus is the electronic device that is used for writing on the screen of computing devices.It can be used for writing , drawing shape, selecting options in more accurate manner.It has structure of a pen i.e.- elongated pen-like form with one side pointed edge to point on the screen.
According to the question,customer should be provided by stylus from store owner as he is demanding a pen-like device to access inputs on the laptop screen.