[[quoteright:240:[[Film/NeverLetMeGo http://static.tvtropes.org/pmwiki/pub/images/259811cb2f7c25e3f925004d18d04cc0.jpg]]]]

Works set in the future or depicting organisations with access to advanced technology often show that people have been injected with microchips to be identified or tracked. This can show technological advancement or a lack of privacy for the protagonists.

In darker works, a character may not recall being "chipped" and be alarmed when he finds one in his body, raising questions about who is tracking him and how it was installed.

Note that technologies that aren't used for tracking or identification, such as the head jacks in ''Film/TheMatrix'', don't count as examples.

Compare BigBrotherIsWatching, RestrainingBolt, ScannableMan, TheSchizophreniaConspiracy. This is a SubTrope of TrackingDevice.


[[folder:Comic Books]]
* An old issue of ''ComicBook/ThePunisher'' has the Punisher reveal that he had a tracking chip implanted into his neck, so that his sidekick Microchip would always be able to find his location.

* ''Film/CasinoRoyale2006''. After Bond runs off and does his usual RogueAgent thing, SIS implants a GPS tracker in his arm to keep track of him. Unfortunately when Bond is captured later on, the villains are smart enough to cut it out.
* ''Film/DemolitionMan''. As part of Doctor Cocteau's master plan, almost everyone in San Angeles had an organic microchip implanted in them. Sensors around the city can determine the exact location of any of them at any time. The Scraps clearly don't have chips implanted, or Cocteau's forces would have hunted them down before the movie started. Simon Phoenix is also noted as not having a chip.
* In ''Film/NeverLetMeGo'', the students have microchips implanted in their wrists.
* In ''Film/TheMatrix'', [[TheHero Neo]] is [[IncrediblyLamePun bugged]] with a tracking bug. It is removed by [[ActionGirl Trinity]].
* In ''Film/TotalRecall1990'', Quaid has been implanted with a tracking chip in his head which he manages to find out about and remove before the bad guys can reach him.
* In ''Film/MissionImpossibleII'', the good guys put a chip in Ethan's head, which transmits his location to a satellite. They tell him, "This chip is completely untraceable." Which kind of defeats the purpose, when you think about it.
* In ''Film/TwelveMonkeys'', the main character is told that he has a tracking chip in his teeth. [[TheToothHurts He removes his teeth]], but is tracked down anyway by another time traveler who's rather surprised his teeth are missing, implying that some other method is used.
* ''Film/JurassicWorld''. ''Indominus rex'' has been implanted with one. Unfortunately ItCanThink, remembers the device being planted, and tears it out. [[FridgeLogic How an animal, no matter how intelligent, would realize the connection between the device and the humans being able to track it]] (despite never being out of its compound) is not mentioned.

* In the ''Literature/MaximumRide'' series, [[spoiler:Max realizes that she has a microchip implanted in her arm, and that this means the lab she came from will always be able to track her. She tries to get it out herself and later has it surgically removed.]]
* In ''Literature/TheHungerGames'', all the tributes going into the Games are implanted with a tracker so that the Capitol knows where they are in the arena at all times.
* ''Great Crystal'' series by Vladislav Krapivin had a world with ComputerizedJudicialSystem using "bio-indexes", set early on and irremovable as they saturate the whole body -- it started as a convenience, and in two generations or so ended up in outlawing anyone who remains index-less. Naturally, when a boy with otherwise inconsequential [[HealingHands healing talent]] accidentally purged himself of this thing, the bureaucracy [[RevealingCoverUp overreacts]] and HilarityEnsues.
* PlayedWith in ''Literature/{{Genome}}'': most people have identification chips implanted into them, but rather than sending digital activation codes, the chips connect directly to the user's blood circulation system, look for a freshly produced leucocyte and transmit the genetic markers unique to the user to the authentication system.
* In the ''Literature/ArkRoyal'' trilogy naval captains have ID chips in their palms that are needed to issue commands. [[spoiler: The Russian agents in the third book cut out Fitzwilliams' chip.]]
* In ''Literature/TheGirlFromTheMiraclesDistrict'', before sending Robin to work with Nikita, Irena implants him with two tracking chips - one high-tech, one magical - so that she can keep an eye on him, and, by extension, Nikita. This being pretty par for the course for Irena, Nikita quickly has both of them located and cut out.

[[folder:Live Action TV]]
* In the ''Series/RedDwarf'' episode "Epideme", Kryten uses a scanning device to identify the dead body of a former JMC employee. He mentions that it is seeking her microchip, since JMC employees are implanted with them.
* In ''Series/{{Heroes}}'', The Company kidnaps evolved humans and injects them with tracking devices ("bagging and tagging").
** In the first episode of volume 4, Hiro implants Ando with a GPS tracker.
* In ''Series/TheXFiles'' third season episode "The Blessing Way", Scully discovers a computer chip implanted in her neck. In later episodes, she tries to find out what it does.
* In ''Series/TheLastEnemy'', a government that already makes its citizens carry ID cards everywhere is plotting to upgrade to tracking chips. At least one character gets secretly chipped after attracting the government's attention.
* In the ''Series/{{CSI Miami}}'' episode "Legal", a victim was identified by the ID/credit chip she'd had implanted in her arm so she could go to nightclubs without a purse.
* In ''Series/CharlieJade'', all people in the Alphaverse have chips implanted in their arms that act as identification, an electronic wallet and as tracking devices. The plot of the series is kicked off when a women is found dead and the autopsy reveals that she does not have a chip and never had one implanted at all. This is an impossibility in that world so the titular detective is asked to investigate.
* In the ''Series/DoctorWho'' episode [[Recap/DoctorWhoS27E7TheLongGame "The Long Game"]], set in the year 202,000, all humans have a chip implanted in them to enable their brains to work as computers. It also allows the MonsterOfTheWeek to read their mind.
* In one episode of ''Series/{{Moonlight}}'' an exclusive club that is somehow involved with vampires requires an ID chip implant, explictly compared to dogs, for entry.
* ''Series/{{iCarly}}'': The TV movie ''[=iGo=] to Japan'' has Mrs. Benson reveal that she has a chip implanted in Freddie's skull, and it becomes useful when she and Spencer are trying to find the kids when they're kidnapped.
* {{Subverted}} in the ''Series/{{Castle}}'' episode "[[Recap/CastleS3E9CloseEncountersOfTheMurderousKind Close Encounters of the Murderous Kind]]". Castle is convinced that, given the victim died by ExplosiveDecompression, she was the victim of an AlienAbduction gone wrong, and so a metal fragment stuck up her nose must be an alien implant. Lanie, the ME, puts the kibosh on this: it turns out to be a calcification from a sinus infection that only ''looked'' like metal on the x-ray.
-->'''Beckett:''' There you go. Logical explanation.
-->'''Castle:''' Yeah. I would disguise my tracking implant as a rare medical--
-->'''Beckett:''' ''(ignores him and moves on)''
* ''Series/PersonOfInterest''. Team Machine goes to the morgue to examine the body of former NSA agent Alicia Corwin, and finds there's a post-mortem cut on her shoulder where something was removed, a tracking chip implanted by a private intelligence agency, [[ParanoiaFuel apparently without her knowledge.]]
* ''Series/LawAndOrderSVU'' used this twice, with RFID chips that record when the person passes certain points. In one episode, a man had the ID points at his house and his friend's house and business to see if his wife was having an affair. In another, parents who'd lost their daughter adopted a ReplacementGoldfish and put the ID point at their front door so they'd know when she was coming and going.
* ''Series/BlakesSeven''. The episode "Rumors of Death" opens with Avon captured and interrogated by a TortureTechnician called Shrinker. Avon keeps rubbing his neck until Shrinker smugly informs him that they know all about the homing device he has implanted there, which was left on so Avon's friends would be LuredIntoATrap. Avon replies that he was actually turning the device off as a signal that Shrinker had arrived on the scene. Avon's friends promptly teleport into the cell and depart with Avon and Shrinker.

[[folder:Tabletop Games]]
* In the ''[[TabletopGame/D20Modern d20 Modern]]'' science fiction sourcebook ''d20 Future'', characters can acquire subcutaneous "shepherd chips" as a form of permanent identification, useful for easily trading contact information with other shepherd chip-users as a sort of digital business card. Sinister implications are left unmentioned, but given the name, any halfway creative GameMaster could run with it in an instant.
* Anything and anyone in ''TabletopGame/{{Shadowrun}}'' can have a tracking RFID chip, so tag erasers are a very common piece of gear amongst runners. The signature characters relate tales of how a single errant RFID chip can compromise a mission and make it a point to blast everything and everyone they acquire with a tag eraser.
* In ''TabletopGame/HcSvntDracones'' most people store their personal data in cloud servers accessed by placing a quarter-sized "Toggle" on a smartglass surface. For just 50 credits a Toggle can be implanted in your palm.

[[folder:Video Games]]
* In ''VideoGame/TheSecretWorld'', new Illuminati recruits are all fitted with microchips at the base of their spine so that the Illuminati can keep tabs on them. [[spoiler: This becomes a plot point when you have to track down a rogue agent; later in the quest, he turns up dead courtesy of a horde of angry mummies, so you've got to retrieve his chip.]]
** Issue #7 reveals that the [[MegaCorp Orochi Group]]'s test subjects are implanted with tracking chips to ensure that they can be easily found and recaptured in the event of a breakout. This comes in very handy when you have to rescue two children who've just escaped from an Orochi facility, though it does require you to purloin the necessary tracking equipment in order to follow the signal. [[spoiler: Unfortunately, the trail ends with no sign of the children, for ''something'' has torn both microchips out of the test subjects and left them floating in a sizeable pool of blood. Suffice to say, this was an update that thoroughly averted InfantImmortality.]]
* In ''VideoGame/QuakeIV'':
--> '''Marine''': Hannibal! I need a medic!
-->'''Medic''': Who are you? I'm not able to get a reading on your medchip.
-->'''Marine''': Corporal Thomas Alvarez. My medchip is damaged.
-->'''Medic''': But your medchip's implanted in your heart!
-->'''Marine''': I know... I'm looking at it right now.
* Some of the findable clues to the history of Laurentia in ''VideoGame/NexusClash'' describe a citywide backlash against immigrants who arrived as part of a world-spanning refugee crisis. One of the hints that something is amiss is a description of immigrant laborers being implanted with tracking chips in order to get jobs outside of the ghetto that they'd been relegated to.

* This is joked about from time to time in ''Webcomic/SluggyFreelance'', with Riff saying he's put a chip in Torg's head. A Dorito.

[[folder:Web Original]]
* In Podcast/EdictZeroFis, the Remote Mission Oversight System (RMOS) includes implants to track the location, status, and vitals of agents in the field. A similar system is used with patients in Harlan Hills Sanitarium.

[[folder:Western Animation]]
* In the pilot episode of ''WesternAnimation/{{Futurama}}'', everyone has a chip implanted with the information on the job for which he is best suited. It isn't brought up again until the following season and never mentioned after that.
* In ''WesternAnimation/TheSimpsons'' episode "The Boy Who Knew Too Much" (S5 E20), Principal Skinner bemoans the fact that only the kids that don't need to be tracked volunteered to be chipped.
* In ''WesternAnimation/JimmyNeutron'', Jimmy's mother put one of these in Jimmy's father, just in case.
-->'''Hugh Neutron:''' Darn thing ''still'' itches.
* ''WesternAnimation/FamilyGuy'': In a ChristmasEpisode, after Lois snaps and goes on a rampage, Peter mentions that he put a homing device in her skull for such an occasion and uses a laptop to detect her location. Several dots appear on the screen, and Peter realizes he also put some in some squirrels.
* ''WesternAnimation/KimPossible'': There are scattered references to [[MissionControl Wade]] secretly tagging Ron with a tracking chip.

[[folder:Real Life]]
* In May 1998, Kevin Warwick [[http://www.wired.com/wired/archive/8.02/warwick.html implanted an RFID tag beneath his skin]] and used it to control lights, doors, etc. Several hobbyists have followed, such as [[http://jon.oxer.com.au/blog/id/86 Australian software developer Jonathan Oxer]].
* [[https://en.wikipedia.org/wiki/PositiveID PositiveID]]
* Civil rights issues covered at [[http://www.spychips.com spychips.com]]
* Implanted RFID chips/tags are often used for identifying pets, livestock, or highly endangered animals since they are unobtrusive and unlikely to fall off or break like collars or bands can.
* Some nightclubs offer RFID chip implants to [=VIPs=], who use them to add drinks to their tab.
* A fairly popular conspiracy theory links the possible widespread implementation of RFID implants to the NumberOfTheBeast. Which, along with more mundane concerns about abuse by authoritarian governments, has largely prevented this trope from appearing much in real life.