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There are no keys to hand off. Most jets don't have any access controls.

Also, except on takeoff, large jets are moved around the airfield by ground tugs, not by taxiing. Airport staff will tug the planes to where they need to go, even if the pilot isn't around.

There's no special link between a pilot and a particular hull, the controls are the same. The staff making sure the parking brake is off don't even need to be pilots. To give liability a wide berth, the bizjet's operator / captain will usually be in the loop, but it's not a hard requirement.

Modern towbarless tugs can operate without a pilot in the cockpit, by lifting the nose wheel.

There are no keys to hand off. Most jets don't have any access controls - staff access trumps security.

Except on takeoff, large jets are preferably moved around the airfield by ground tugs, rather than taxiing. Airport staff will tug or taxi the planes to where they need to go, even if the pilot isn't around.

There's no special link between a pilot and a particular hull, the controls are the same. The staff making sure the parking brake is off don't have to be pilots. To give liability a wide berth, the bizjet's operator / captain can be in the loop, but it's not a hard requirement.

Modern towbarless tugs can operate without a pilot or mechanic in the cockpit at all, by lifting the nose wheel.

There are no keys to hand off. Most jets don't have any access controls.

Also, except on takeoff, large jets are moved around the airfield by ground tugs, not by taxiing. Airport staff will tug the planes to where they need to go, even if the pilot isn't around.

There's no special link between a pilot and a particular hull, the controls are the same. The staff making sure the parking brake is off don't even need to be pilots. To give liability a wide berth, the bizjet's pilot will usually be involved, but it's not a hard requirement.

There are no keys to hand off. Most jets don't have any access controls.

Also, except on takeoff, large jets are moved around the airfield by ground tugs, not by taxiing. Airport staff will tug the planes to where they need to go, even if the pilot isn't around.

There's no special link between a pilot and a particular hull, the controls are the same. The staff making sure the parking brake is off don't even need to be pilots. To give liability a wide berth, the bizjet's operator / captain will usually be in the loop, but it's not a hard requirement.

Modern towbarless tugs can operate without a pilot in the cockpit, by lifting the nose wheel.

There are no keys to hand off. Most jets don't have any access controls.

Also, except on takeoff, large jets are moved around the airfield by ground tugs, not by taxiing. Airport staff will tug the planes to where they need to go.

There's no special link between a pilot and a particular hull, the controls are the same. The staff making sure the parking brake is off don't even need to be and usually aren't pilots.

There are no keys to hand off. Most jets don't have any access controls.

Also, except on takeoff, large jets are moved around the airfield by ground tugs, not by taxiing. Airport staff will tug the planes to where they need to go, even if the pilot isn't around.

There's no special link between a pilot and a particular hull, the controls are the same. The staff making sure the parking brake is off don't even need to be pilots. To give liability a wide berth, the bizjet's pilot will usually be involved, but it's not a hard requirement.