CGS 2060 computer input

Video Teleconferencing (VTC)

-Skype -Google+ -Hangouts -Apple Facetime

roll-up keyboard

-easily stuff into backpack

eye recognition systems

-iris recognition -retina recognition

scanners

-puts paper documents into a digital format that can be viewed or manipulated on a computer

extreme action video camera options

-GoPro's Hero 4 -iON Air Pro -SONY Action Cams -etc

projection laser keyboard

-allow any flat surface to the keyboard

input devices

-allow data and signals to enter a computer

OCR (Optical Character Recognition)

-allows any text, even handwritten scrawls, to be digitized -uses algorithms that estimate the likelihood of the word that is being written based on character shape, prior entries, and frequency of usage -more often users enter data into OCR software, the more likely the software will correctly "guess" the intended entry

pixel sensor

-allows tiny smartphone cameras to create an image

DSLR camera

-allows you to look directly through the lens -high resolution with interchangeable lens capability

facial recognition

-attempts to identify individuals by specific features -methods include: 3D mapping, relative feature charting, skin texture identification, combo of these

fingerprint scanners

-capacitance sensor -optical sensor -ultrasonic sensor

microphones

-change sound waves into electrical signals -most use a sound sensitive diaphragm over an electrically charged capacitance plate -diaphragm's movement causes the electrons to move creating an electrical current

superzoom camera

-ease of use with high optical zoom capability

point-and-shoot camera

-ease of use with some optical zoom capability

biometrics examples

-fingerprints -eye retinas and irises -facial bone structure -palm prints -stride -typing patterns -speech recognition

scanner options

-flatbed scanners (usually incorporated with printers/copier) -hand-held or wand scanners -MICR readers -bar code scanners -OMR scanners

OMR (Optical Mark Recognition) scanning

-found in standardized tests -students fill in bubbles with #2 pencils -scanner uses a laser that is reflected by the mark made -makes test grading faster and more accurate so most standardized tests now use multiple choice or true/false questions

ergonomic keyboard

-help reduce repetitive stress injuries such as carpel tunnel syndrome

MEMS (MicroElectrical-Mechanical System) chip

-houses diaphragm/capacitance plate combo for microphones

input device examples

-keyboard -mouse -touchpad -touchscreen -camera -microphone -game controller

retina recognition

-less common because retina has many blood vessels -low-power infrared beam is shined in the eye -blood vessels absorb more light than the rest of the retina which causes different blood vessel patterns

gait analysis

-looks at step length, step width, walking speed -angles formed by the trunk, hip, knee, ankle and foot are measures and compared with stored identification data -valuable because it can be used at night or through walls with infrared cameras or even with satellite imagery

3D mapping

-maps the depth of eye sockets, forehead dome, etc

barcode readers

-measures reflection of a laser beam -black bars of the UPC absorb more of the laser's light than the surrounding area -difference is detected by receptors in the scanner

relative feature charting

-measures the distance between eyes, mouth, nose, etc

iris recognition

-most common -iris is photographed -patterns of colors are compared to a database of irises

touchpad

-most use a capacitance system to track finger movement across the touchpad -fingers conduct electrons and the touchpad senses this electron movement -gloves or dry fingers can be problematic

QWERTY keyboard

-named for the first 6 top-row letters from the left -most common computer keyboard -developed to keep 19th century typewriters from jamming

RFID (Radio-Frequency Identification)

-radio waves transmit data -passive tags absorb energy while being scanned and then transmit data to the scanner -active tags have batteries and transmit data continuously -can be extremely small and inexpensive

speech recognition

-records, maps, and analyzes voice patterns -voice frequency, pitch, speech rhythms, and other characteristics are charted and compared to existing records -increasingly used in telephone banking and for other financial transactions, smartphones, as well as by governmental agencies for security purposes

extreme action video cameras

-rugged, water-resistant -allow users to film high-definition video under harsh conditions -often mounted on helmets -most incorporate video stabilization and background noise dampening microphones

NFC (Near Field Communication)

-short-range wireless connectivity standard that uses magnetic field induction to enable communication between devices when they're touched together or brought within close proximity -ex: Apple Pay

static method signature identification

-signatures are written on paper and then scanned -the software then maps the signature

optical sensor

-takes a photo of your fingerprint -has disadvantage of not working well when the sensor or fingers are dirty

webcams

-takes photos or streams video into a computer or over the internet

specialized stylus-equipped touchpad

-used by artists and graphic designers -allow them to create brush strokes, calligraphy, and other artist options

MICR (Magnetic Ink Recognition)

-used on checks -can be quickly processed by cashiers and banks -characters written with ink containing iron oxide detected -info typically includes: bank's routing number, checking account identification, check number

dynamic method signature identification

-uses a stylus and touchpad -maps the signature and also measures pressure, pen angle, pen up/down, speed, etc

biometrics

-uses human traits for identification -everyone should have the trait but it must be unique to each individual -trait shouldn't change over time

POS (Point-Of-Sale) devices

-uses multiple input devices -grocery check out

ultrasonic sensor

-uses the reflection of sound waves to detect the patterns on your fingerprint

capacitance sensor

-works like a laptop's touchpad or a phone's touchscreen -uses electron movement to sense fingerprint patterns