Today’s invention is a holster for handguns that guarantees that, when drawn, the weapon’s safety catch is automatically released.
The interior of the holster would be fitted with a moulded channel component. This would act as a cam for the particular gun in question, bearing on the safety catch both when withdrawn and re-holstered so that moving the gun relative to the holster moves the catch relative to the weapon.
This means that every time a gun is unholstered (from a safe condition), the user can’t be confused about whether or not they are holding a live weapon.