Glossary

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TermExplanation
Biometric Biometrics (ancient Greek: bios ="life", metron ="measure") is the study of automated methods for uniquely recognizing humans based upon one or more intrinsic physical or behavioral traits. In information technology, biometric authentication refers to technologies that measure and analyze human physical and behavioral characteristics for authentication purposes. Examples of physical characteristics include fingerprints, eye retinas and irises, facial patterns and hand measurements, while examples of mostly behavioral characteristics include signature, gait and typing patterns. Voice is considered a mix of both physical and behavioural characteristics. However, it can be argued that all biometric traits share physical and behavioral aspects.
BiometricsBiometrics (ancient Greek: bios ="life", metron ="measure") is the study of automated methods for uniquely recognizing humans based upon one or more intrinsic physical or behavioral traits. In information technology, biometric authentication refers to technologies that measure and analyze human physical and behavioral characteristics for authentication purposes. Examples of physical characteristics include fingerprints, eye retinas and irises, facial patterns and hand measurements, while examples of mostly behavioral characteristics include signature, gait and typing patterns. Voice is considered a mix of both physical and behavioural characteristics. However, it can be argued that all biometric traits share physical and behavioral aspects.
EPOSPOS or PoS is an abbreviation for point of sale (or point of service). This can mean a retail shop, a checkout counter in a shop, or a variable location where a transaction occurs. In Europe, the acronym EPOS for Electronic Point Of Sale is used in preference.
HTM01-05 
Intrinsically safe

A range of devices that have been specifically developed for use in hazardous areas where an explosive mixture of air and gas or vapour is or may be present.

These areas typically include petroleum and chemical engineering plants and factories processing and storing gases, solvents and other volatile substances.

IP 54IP54 / NEMA 2

Protected against splashing water and the ingress of most dust.

IP 65IP65 / NEMA 4

Completely protected against the ingress of dust and against water jets.

NEMA 4X Same as NEMA 4 with the added benefit of being corrosion proof.

IP 67IP 67 / NEMA 6

Can be immersed in water under defined conditions and completely protected against the ingress of dust.

IP rated

Ingress Protection (IP) ratings are developed by the European Committee for Electro Technical Standardization (CENELEC) (described IEC/EN 60529), specify the environmental protection an enclosure provides.

The IP rating normally has two (or three) numbers:

  1. Protection from solid objects or materials
  2. Protection from liquids
  3. Protection against mechanical impacts (commonly omitted)

Example - IP Rating

With the IP rating IP 54, 5 describes the level of protection from solid objects and 4 describes the level of protection from liquids.

IP First number - Protection against solid objects

0 No protection.
1 Protected against solid objects up to 50mm, e.g. accidental touch by hands.
2 Protected against solid objects up to 12mm, e.g. fingers.
3 Protected against solid objects over 2.5mm (tools and wires).
4 Protected against solid objects over 1mm (tools, wire, and small wires).
5 Protected against dust limited ingress (no harmful deposit).
6 Totally protected against dust.

IP Second number - Protection against liquids

0 No protection.
1 Protection against vertically falling drops of water e.g. condensation.
2 Protection against direct sprays of water up to 15o from the vertical.
3 Protected against direct sprays of water up to 60o from the vertical.
4 Protection against water sprayed from all directions o limited ingress permitted.
5 Protected against low pressure jets of water from all directions o limited ingress.
6 Protected against low pressure jets of water, e.g. for use on ship decks - limited ingress permitted.
7 Protected against the effect of immersion between 15cm and 1m.
8 Protects against long periods of immersion under pressure.
IP Rating

Ingress Protection (IP) ratings are developed by the European Committee for Electro Technical Standardization (CENELEC) (described IEC/EN 60529), specify the environmental protection an enclosure provides.

The IP rating normally has two (or three) numbers:

  1. Protection from solid objects or materials
  2. Protection from liquids
  3. Protection against mechanical impacts (commonly omitted)

Example - IP Rating

With the IP rating IP 54, 5 describes the level of protection from solid objects and 4 describes the level of protection from liquids.

IP First number - Protection against solid objects

0 No protection.
1 Protected against solid objects up to 50mm, e.g. accidental touch by hands.
2 Protected against solid objects up to 12mm, e.g. fingers.
3 Protected against solid objects over 2.5mm (tools and wires).
4 Protected against solid objects over 1mm (tools, wire, and small wires).
5 Protected against dust limited ingress (no harmful deposit).
6 Totally protected against dust.

IP Second number - Protection against liquids

0 No protection.
1 Protection against vertically falling drops of water e.g. condensation.
2 Protection against direct sprays of water up to 15o from the vertical.
3 Protected against direct sprays of water up to 60o from the vertical.
4 Protection against water sprayed from all directions o limited ingress permitted.
5 Protected against low pressure jets of water from all directions o limited ingress.
6 Protected against low pressure jets of water, e.g. for use on ship decks - limited ingress permitted.
7 Protected against the effect of immersion between 15cm and 1m.
8 Protects against long periods of immersion under pressure.
IP65IP65 / NEMA 4

Completely protected against the ingress of dust and against water jets.

NEMA 4X Same as NEMA 4 with the added benefit of being corrosion proof.

Media KeyboardA keybaord with special function keys that can be used to launch every day applications such as internet browser, email or to control a video or audio media
Modifier KeyIn computing, a modifier key is a special key on a computer keyboard that modifies the normal action of another key when the two are pressed in combination. The most common modifier keys, as used by PCs, are: – Shift key – Control key – Alt key (Alternative key) (called so in GNOME and KDE) – Windows key – AltGr key , of course, is the oldest in terms of keyboards in general as it originates from typewriters and is usually used to make uppercase letters when typing.
NEMA 4X

NEMA 4X

Same as NEMA 4 with the added benefit of being corrosion proof.

POSPOS or PoS is an abbreviation for point of sale (or point of service). This can mean a retail shop, a checkout counter in a shop, or a variable location where a transaction occurs. In Europe, the acronym EPOS for Electronic Point Of Sale is used in preference.