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Brief Published: 7 Feb 2014

Olfactory Timekeeping: Scent Rhythm


Scent Rhythm is a timekeeping device that maps olfactory sequences to the body’s circadian rhythm (internal body clock), enabling the user to tell the time of day through scent.

Conceived by US-based technologist Aisen Caro Chacin, the prototype wristwatch features four tiny dispensers. Each is filled with a specially designed fragrance – Awake, Active, Rest and Sleep – and is programmed to release them at certain times of the day.

Each fragrance is mingled with a chemical accompaniment to induce appropriate actions: coffee and caffeine is released in the morning to wake the wearer up, while chamomile enhanced with serotonin promotes sleep.

The watch could prove particularly inspirational for the healthcare sector. As previously explored in our report Scent & Dementia, smell could be used to trigger actions in individuals whose circadian rhythm or memory might be affected. Other applications include the administration of small doses of airborne medication or health and wellness supplements.

For more on olfactory experimentation, take a look at Ophone: Sending Scent, The Scent of Place and Directions in Scent.