Deepinder Goyal’s Temple wearable: 10 things to know before pre-orders open

Zomato co-founder Deepinder Goyal’s Temple wearable is almost ready to go on sale. Pre-orders for the first batch will open on November 1, 2026, with orders accepted on a first-come, first-served basis.Unlike a smartwatch that sits on your wrist, Temple is a small, pill-shaped wearable that attaches to the side of your head, between your forehead and ear. It is designed to track changes linked to blood flow in the brain.Temple’s main technology is called BrainFlow. It uses optical sensors to track changes in cerebral blood flow, which refers to the movement of blood through the brain. The idea is to offer insights into brain-related activity outside a hospital or laboratory.Temple aims to measure signals linked to brain oxygenation, cognitive load and the body's response to stress. It also uses an Entropy score, ranging from 1 to 250, to indicate physiological strain.The wearable attaches to your skin using single-use adhesive tapes called Grips. Each Grip can last around seven days, although the company recommends changing it every two to three days, especially if you sweat frequently.Yes, Temple is designed to stay in place during activities such as running and jumping. Deepinder Goyal has also said users can shower, swim and use a sauna while wearing it, although scuba diving is not recommended.Want something beyond the usual black and silver? Temple's launch edition will come in six colours: True Gold, Rose Gold, Black Mirror, Real Jade, Deep Blue and Purple Funk. Real Jade, Deep Blue and Purple Funk are limited-edition options.The company has not announced the official price yet. Goyal has hinted at a price of around $1,000, or roughly Rs 1 lakh. An earlier estimate suggested around Rs 72,000, but buyers will have to wait for the final announcement.Is Temple a medical device? Not for now. Temple is designed for wellness and research, not medical diagnosis.