A Microchip

John invented a microchip that, when placed on the back of a woman's neck, would turn them into mindless robots. From there, John could turn them into service bots that each served a different purpose, like 'Maid-bot', 'Dog-bot', 'Twerk-bot', Wife-bot', and so on.

Johm used his hacking skills to find the location of a celebrity.