Editing Proxemics (section)

=== Biometrics ===
{{Main article|Biometrics}}
Hall used biometric concepts to categorize, explain, and explore the ways people connect in space. These variations in positioning are impacted by a variety of nonverbal communicative factors, listed below.

* '''Kinesthetic factors''': This category deals with how closely the participants are to touching, from being completely outside of body-contact distance to being in physical contact, which parts of the body are in contact, and body part positioning.
* '''[[Haptic communication|Haptic]] code''': This behavioral category concerns how participants are touching one another, such as [[caressing]], holding, feeling, prolonged holding, spot touching, pressing against, accidental brushing, or not touching at all.
* '''Visual code''': This category denotes the amount of [[eye contact]] between participants. Four sub-categories are defined, ranging from eye-to-eye contact to no eye contact at all.
* '''Thermal code''': This category denotes the amount of [[body heat]] that each participant perceives from another. Four sub-categories are defined: [[heat conduction|conducted heat]] detected, [[thermal radiation|radiant heat]] detected, heat probably detected, and no detection of heat.
* '''[[Olfaction|Olfactory]] code''': This category deals in the kind and degree of [[odour|odor]] detected by each participant from the other.
* '''Voice loudness''': This category deals in the [[vocal effort]] used in speech. Seven sub-categories are defined: silent, very soft, soft, normal, normal+, loud, and very loud.