of items and immediately enter the information into the company system. This removed the need for carrying a clipboard, removed error and confusion from hand written notes, and allowed workers the freedom of both hands while working; the system improves accuracy as well as efficiency. Popular culture Many technologies for wearable computers derive their ideas from science fiction. There are many examples of ideas from popular movies that have become technologies or are technologies currently being developed. 3D user interface Devices that display usable, tactile interfaces that can be manipulated in front of the user. Examples include the glove-operated hologram computer featured at the Pre-Crime headquarters in the beginning of Minority Report and the computers used by the gate workers at Zion in The Matrix trilogy. Intelligent textiles or smartwear Clothing that can relay and collect information. Examples include Tron and its sequel, and also many sci-fi military films. Threat glasses Scan others in vicinity and assess threat-to-self level. Examples include Terminator 2, 'Threep' Technology in Lock-In, and Kill switch. Computerized contact lenses Special contact lenses that are used to confirm one's identity. Used in Mission Impossible 4. Combat suit armor A wearable exoskeleton that provides protection to its wearer and is typically equipped with powerful weapons and a computer system. Examples include numerous Iron Man suits, the Predator suit, along with Samus Aran's Power Suit and Fusion Suit in the Metroid video game series. Brain nano-bots to store memories in the cloud Used in Total Recall. Infrared headsets Can help identify suspects and see through walls. Examples include Robocop's special eye system, as well as some more advanced visors that Samus Aran uses in the Metroid Prime trilogy. Wrist-worn computers Provide various abilities and information, such as data about the wearer, a vicinity map, a flashlight, a communicator, a poison detector or an enemy-tracking device. Examples included are the Pip-Boy 3000 from the Fallout games and Leela's Wrist Device from the Futurama TV sitcom. On-chest or smart necklace This form-factor of wearable computer has been shown in many sci-fi movies, including Prometheus and Iron Man. Advancement with wearable technology over years Technology has advanced with continuous change in wearable computers. Wearable technologies are increasingly used in healthcare. For instance, portable sensors are used as medical devices which helps patients with diabetes to help them keep track of exercise related data. A number of people think wearable technology as a