Telepathy is the ability to transfer thoughts or feelings from the mind of one individual to that of another (or between groups of people), without using the ordinary five senses. If you were telepathic, you would be able to read someone else's mind. Telepathy serves as a means of communication when information is prevented from other methods of travel due to physical obstacles, distance, or time.
Telepathy was formerly termed, "thought-transference," until Frederick W. H. Myers renamed it in 1882. Genuine telepathy differs from acts of mentalism in that no trick or illusion is necessary to produce results. However, skeptics are still doubtful of the existence of genuine telepathic abilities, especially given that no experiment has produced continually verifiable results time after time.
Various testing methods have been implemented to check for telepathic abilities in individuals. Among them are the Zener card test and the Ganzfeld experiment. Zener cards have special symbols on them, and while one subject looks at a card, the other tries to telepathically receive the symbol, which is unknown to them. The Ganzfeld experiment requires someone receiving information to maintain total sensory deprivation, while the other transmits from a separate location.
Two specific classes of telepathy focus on the amount of time between the information's point of origin and its receipt by a telepath. Latent telepathy, formerly "deferred telepathy," entails a delay between the points at which information is sent and received. Precognitive telepathy, on the other hand, covers cases in which the telepath receives information from the sender's future mind. Essentially, a precognitive telepath would know what you were going to think before you thought it.
One form of telepathy that is actively being "created" is cyber-telepathy, which has come to be called "techlepathy." Techlepathy is telepathy brought about through technological means, in which humans can connect to computers and to each other. Some people truly believe that humanity will someday be connected in just such a way.