In language, modality is the subject concerning so-called "modal verbs" like can, must, and should, that are customarily used to modify the meaning of other verbs (which in turn tend to take the infinitive). Modal verbs express possibility (and impossibility, necessity, contingency, etc.), permissibility (and obligation, proscription, etc.), probability (and improbability, etc.). See grammatical mood. Linguistic modality can also refer to the type of communication, whether vocal, signed, or written.
In philosophy, modal logic is a form of logic which distinguishes between (logically) "necessary truths" and "contingent truths". Related topics are possibility, impossibility, actuality, and related predicates.
In computer science and particularly computer vision, modality refers to the type of input. That is, black-and-white, color and infrared are three different modalities for the acquisition of an image.
In advance fee fraud (Nigerian 419 Scams), the term modality is used to describe the method of funds transfer. Often used in as a key word in scam baiting
This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. If an article link referred you here, you might want to go back and fix it to point directly to the intended page.
