Sir Tech Puns

My grandpa told me this joke; mind you, it was in the '90s, before all the computer tech became relevant.

Inventor runs to the patent office:

• I have a brand new machine idea!
• What does it do? - asked the official.
• You know how every man is tired of shaving every single morning? My shaving machine would be placed all over the city, for scruffy lads to just put their heads in the device, and in exchange for a quarter, it would shave their face for them! - replied the inventor.
• But Sir, every person's face has a different shape!
• ...At first!