Usernames, passwords, and personal identification numbers (PIN) impossibilitate anyone who does not know them from entering a website or completing a financial transaction at an automatic teller machint (ATM).
Before the COVID-
19 pandemic, at the New Year's Celebration held each year in Times
Square, being surrounded by massive numbers of people made it
one-hundred percent impossible for anyone from advancing.
The addictive chemicals in
cigarettes make it close to impossible for smokers to stop
smoking.
Drivers Licenses make it
almost impossible for someone to drive without having obtained a driver's license.
Locks make it mostly impossible for anyone to enter without opening the lock with its
key.
Male as
well as
female condoms make it as impossible as possible for a sperm to not enter the
vagina.
Prisons make it close to impossible for any prisoner to escape.
Reserve parachutes make it virtually impossible for someone to continue free falling and die on impact because their main parachute did not open and they did not have a reserve parachute, or as unlikely as it seems to be, if the reserve parachute also failed to open. But there is usually no way to prevent unexpected things from happening.
The sex drive is so powerful, it impossibilitates a species' self-extinction.
Structural or electronic blocks impossibilitate certain things from taking place. But some of those what could be called—structural or electronic impossibilitators" do not always succeed.