Question: What is the popular device made by the company co-founded by Min H. Kao and Gary Burrell? 

Context paragraphs:
Min Kao: Min H. Kao () is a Taiwanese-born American electrical engineer, businessman and philanthropist.  He is the co-founder of Garmin Corporation with Gary Burrell.  As of August 2017, his personal wealth was estimated at $3 billion.

Hammond Electric Bridge Table: The Hammond Electric Bridge Table was an electromechanical automatic card shuffling machine that dealt playing cards at random to four bridge players.  The mechanism was built into a card table.  The main concept of the machine was as a labor saving aid for bridge players in dealing out the hands.  The invention was an offspring from the Hammond Clock Company as an additional product.  It was a popular device when first introduced at the pre-Christmas season of 1932.  That was short lived, however, and production lasted only a couple of years.

Pheromones in fiction: Pheromones are a type of hormone.  They are excreted chemical factors that trigger a physiological response in members of the same species that often result in changed social behavior.  Pheromones are a popular device in fiction to allow characters to influence one another.

CCID (protocol): CCID (chip card interface device) protocol is a USB protocol that allows a smartcard to be connected to a computer via a card reader using a standard USB interface, without the need for each manufacturer of smartcards to provide its own reader or protocol.  This allows the smartcard to be used as a security token for authentication and data encryption, such as that used in Bitlocker.  Chip card interface devices come in a variety of forms.  The smallest CCID form is a standard USB dongle and may contain a SIM card or Secure Digital card inside the USB dongle.  Another popular device is a USB smart card reader keyboard, which in addition to being a standard PC USB keyboard, has an additional slot for accepting a smartcard.

CD64 (Nintendo): The CD64 is a game backup device made by UFO/Success Company for the Nintendo 64 that allows to run ROM files off a CD-ROM attached to the system.  Similar to the Doctor V64 and the Z64 units for the N64, it is most commonly used for playing backups of Nintendo 64 games.  Since it has a built-in communications port that is accessible from the N64 program, it can also be used as a rather versatile development/debug device.

Ultimate Nullifier: The Ultimate Nullifier is a device of immense power in Marvel Comics.  The device made its first appearance in "Fantastic Four" volume 1, issue #50 (May 1966), in which Johnny Storm retrieves it from the home of Galactus—as directed by Uatu the Watcher—for the Fantastic Four to employ against the threat of Galactus himself.  The Nullifier appears as a small, hand-held metallic device with no apparent functionality.  When first introduced in 1966 it was described as the only known weapon in the universe capable of inspiring fear in Galactus.

Garmin: Garmin Ltd. (shortened to Garmin, stylized as GARMIN, and formerly known as ProNav) is an American multinational technology company founded by Gary Burrell and Min Kao in 1989 in Lenexa, Kansas, United States, with headquarters located in Olathe, Kansas.

Gary Burrell: Gary Burrell (born 1937) is an American businessman and philanthropist.  He is the co-founder and chairman emeritus of Garmin, makers of popular Global Positioning System devices.

Levonorgestrel-releasing implant: Levonorgestrel-releasing implant, sold under the brand name Jadelle among others, is a device made up of a two rods of levonorgestrel used for birth control.  It is one of the most effective forms of birth control with a one-year failure rate around 0.05%.  The device is placed under the skin and lasts for up to five years.  It may be used by women who have a history of pelvic inflammatory disease and therefore cannot use an intrauterine device.  Following removal fertility quickly returns.

James C. Marsters: James Carlyle Marsters (April 5, 1924 – July 28, 2009) was a deaf orthodontist in Pasadena, California who in 1964 helped invent the first teletypewriter device capable of being used with telephone lines.  The device made communication by telephone possible for the deaf.  Although Robert Weitbrecht did much of the actual design work, Marsters promoted the device's use.

Supporting paragraphs: Min Kao Gary Burrell
Answer: Global Positioning System devices