Specifications

Glossary - 5

Key. A key is the specific code used by the algorithm to encrypt or decrypt the data. Also see, Encryption and

Decrypting.

laser scanner. A type of bar code reader that uses a beam of laser light.

LASER. (Light Amplification by Stimulated Emission of Radiation) The laser is an intense light source. Light from a laser

is all the same frequency, unlike the output of an incandescent bulb. Laser light is typically coherent and has a high

energy density.

LCD. See Liquid Crystal Display.

LEAP. (Lightweight Extensible Authentication Protocol) A mutual authentication method that uses a username and

password system.

LED Indicator. A semiconductor diode (LED - Light Emitting Diode) used as an indicator, often in digital displays. The

semiconductor uses applied voltage to produce light of a certain frequency determined by the semiconductor's

particular chemical composition.

Liquid Crystal Display (LCD). A display that uses liquid crystal sealed between two glass plates. The crystals are

excited by precise electrical charges, causing them to reflect light outside according to their bias. They use little

electricity and react relatively quickly. They require external light to reflect their information to the user.

Mobile Computer. In this text, mobile computer refers to the MC17 mobile computer. It can be set up to run as a

stand-alone device, or it can be set up to communicate with a network, using wireless radio technology.

MS CHAP. (Microsoft Challenge Handshake Authentication Protocol) is the Microsoft version of CHAP and is an

extension to RFC 1994. Like the standard version of CHAP, MS-CHAP is used for PPP authentication; in this case,

authentication occurs between a PC using Microsoft Windows NT or Microsoft Windows 95 and a Cisco router or

access server acting as a network access server (NAS).

Nominal. The exact (or ideal) intended value for a specified parameter. Tolerances are specified as positive and

negative deviations from this value.

Nominal Size. Standard size for a bar code symbol. Most UPC/EAN codes are used over a range of magnifications

(e.g., from 0.80 to 2.00 of nominal).