Michael Carr, 23, was working as a driver for the girl's family; he was arrested Monday near a new job after a three-month-long investigation into what the report called "inappropriate interaction" with the girl.
Police do not believe there were any other victims, but asked anyone with possible additional information about others to contact them at 931-5100.
The charge of showing lewd material, a felony, carries a maximum sentence of seven years; the second charge is a misdemeanor, according to Pleasanton police Sgt. Jim Knox, because the girl was not physically touched. That charge could bring a maximum sentence of a year in prison and a fine of $10,000, if Carr is convicted. He could also have to register as a sex offender.
Carr was booked at Santa Rita Jail pending a court appearance.