History Main / TeleportInterdiction

** Apparition allows you to go virtually anywhere (Hogwarts building and grounds being a notable exception, although how easy it is to protect an area like this is never explained) but it's dangerous: you might leave body parts at your starting point.

* In ''OrderOfTheStick'', Xykon creates a teleportation barrier around [[spoiler:Azure City after he captures it]]. Vaarsuvius manages to warp [[AmbiguousGender him/herself]] through it with assistance from [[spoiler:the soul of a dead wizard]], but ordinary casters must teleport to several miles away from the barrier and then walk in.

* ''Hot Chicks'' RPG. The Ward of Shielding spell prevents magical and psionic teleportation from being used to travel into or out of the protected area.

*** In the episode "Attached", the Enterprise's transporters are redirected by an alien force, so Picard and Crusher end up on a strange planet instead of where they intended.
*** In another episode, the Enterprise is in a confrontation with a Romulan warbird. There is a severely injured Romulan on board the Enterprise who can't be beamed to the Romulan ship unless the ship not doing the beaming lowers its shields. Later there's something of a LensmanArmsRace as the Borg develop a technique to transport through the shields and the Federation develops better shields in response.

* One of the Slitheen in the first series of the new ''DoctorWho'' loves to teleport. The Doctor had already demonstrated that he can reverse a teleport. He then does so several times as the Slitheen repeatedly fails to run away and ends up closer every time.

* conceal the port. For those systems that are limited to working in specific places or with specific equipment, this is an excellent first line of defense.
* prevent the technology from working in a given space. Usually involves jamming the signal.
* allow it to work, but alter the destination. Bonus points if the redircted travellers are put in danger at their unintended destination.
* allow it to work but prevent people from leaving the immediate vicinity once they arrive. Put the port behind a barrier, or set the port itself to prevent unauthorized users from leaving it.
* exploit the TeleFrag phenomenon. People who've just materialized inside a solid aren't generally in any position to be a threat to anyone else.

!!Examples

** There are some other, more rarely used types, which tend to bypass restrictions; in the fifth book, Dumbledore uses his phoenix to teleport out of Hogwarts, because he can't Apparate from there (although later, in the movies, [[AdaptationDecay he apparates from Hogwarts]]...). [[spoiler:Vanishing Cabinets]] seem to have a somewhat dangerous Floo-like network, which is used in the sixth book [[spoiler:by Death Eaters, to infiltrate Hogwarts]].

** There are some other, more rarely used types, which tend to bypass restrictions; in the fifth book, Dumbledore uses his phoenix to teleport out of Hogwarts, because he can't Apparate from there (although later, in the movies, [[AdaptationDecay he apparates from Hogwarts]]...). "Vanishing Cabinets" seem to have a somewhat dangerous Floo-like network, which is used in the sixth book [[spoiler:by Death Eaters, to infiltrate Hogwarts]].

* ''SchlockMercenary'' has Teraport Area Denial technology which prevents all teraports into, out of or within a given volume of space.

*** "Dagger of the Mind". The Tantalus penal colony has a security force field that blocks the Enterprise transporter.
*** "Whom Gods Destroy". The planet Elba II has a force field that prevents the Enterprise from beaming anyone down.

* The thirteenth book in ''TheWheelOfTime'' presents the ''dreamspike'' artifact, which blocks the creation of Gateways within a large radius of its position, including ones inbound from outside the area of effect. In the Dream World, it visibly manifests as a spherical, semipermeable barrier of similar effect, except that teleportation is still possible between between two points both inside the barrier.

** In general, it's not possible to transport through a ship's deflector shields. Usually this is used as a way to add drama -- with the ship having to drop its shields briefly in the middle of battle in order to beam back an away team -- but it also means teleportation-enabled boarding parties aren't a major part of battle tactics.

* In TheElderScrolls 3: Morrowind, the BigBad uses teleport jamming to stop you from teleporting away from his hall.

* In ''Series/StargateAtlantis'', the crew of the ''Daedalus'', in their first appearance, plans on destroying a bunch of Wraith ships by using Asgard beaming technology to beam nukes onto them. It works fine, the first three times they try it. After that, the Wraith figure out how to jam the beam.

* ''HarryPotter'' has three kinds of teleportation, each of which has limitations:

* Since the transporters are such an iconic part of the ''StarTrek'' franchise, it has a lot of this.

* One of the Slitheen in the first series of the new DoctorWho loves to teleport. The Doctor had already demonstrated that he can reverse a teleport. He then does so several times as the Slitheen repeatedly fails to run away and ends up closer every time.

* ''StarTrekTheOriginalSeries''
** "Dagger of the Mind". The Tantalus penal colony has a security force field that blocks the Enterprise transporter.
** "Whom Gods Destroy". The planet Elba II has a force field that prevents the Enterprise from beaming anyone down.
* ''StarTrekTheNextGeneration'',
** In the episode "Attached", the Enterprise's transporters are redirected by an alien force, so Picard and Crusher end up on a strange planet instead of where they intended.
** In another episode, the Enterprise is in a confrontation with a Romulan warbird. There is a severely injured Romulan on board the Enterprise who can't be beamed to the Romulan ship unless the ship not doing the beaming lowers its shields. Later there's something of a LensmanArmsRace as the Borg develop a technique to transport through the shields and the Federation develops better shields in response.

* ''SchlockMercenary'' has Teraport Area Denial technology which prevents all teraports into, out of or within a given volume of space.

* [[{{Warhammer40000}} Warhammer 40,000]] has teleport jammers that can disrupt, stop or relocate things that are teleporting down into combat.

* ''[[TheMerchantPrincesSeries The Merchant's War]]'' by CharlesStross has a smart antagonist going up against dimension-hopping teleporters. Their particular brand of teleportation has safeties built in so that, if there's an obstacle at the other end, the teleport simply doesn't work. So, he fills his castle with netting and rope to foil his foes which not only traps the teleporters into going exactly where he lets them, but lets his own troops walk around unhindered to boot.

** Apparition allows you to go virtually anywhere (Hogwarts building and grounds being a notable exception) but it's dangerous: you might leave body parts at your starting point.

* In ''StargateSG1'', the "iris" is a metal cover that prevents unwanted visitors from entering Stargate Command on Earth. Stargate Command personnel and their allies are given a GDO ("garage door opener") which transmits an IDC (Gateworld wiki says this is "iris deactivation code,"), and only with a valid and received IDC will Stargate Command open the iris and allow people on the other side of the gate to reach Earth. A DHD ("dial hone device") is merely the object which activates a gate. It has nothing to do with the iris (though on Atlantis, the DHD panel in the control room had a button to raise the iris-like force shield). In case that doesn't work, there are machine guns and a heavy steel door between the stargate and the rest of the base. The Asgard develop a version of their own which uses an almost - invisible force - field.

* Older editions of ''DungeonsAndDragons'' had spells that prevented teleportation into an area, such as ''Proof from Teleportation'' (from the ForgottenRealms), ''Teleport Block'' and ''Wall with No Doors''. ''Translocation Shift'' caused incoming teleporters to go to a different location.
** Newer versions of D&D also have such methods, including Forbidance (prevent being from teleporting into the area effected), Dimensional Anchor (prevent the effected being from porting) and Anticipate Telportation (while not blocking it, teleporters are delayed for a few rounds to allow ambushing them).

* In ''TheWheelOfTime'', dreamspikes are used to prevent the formation of gateways.

* In ''TheStarsMyDestination'', teleportation into restricted areas is prevented by erecting mazes around them so that their precise coordinates cannot be known to outsiders, nor discovered by brute force.