Temple wearable: brain blood flow sensor at ~$1,000 nears pre-order

Deepinder Goyal's Temple wearable attaches to the skin near the temple with adhesive Grips and tracks cerebral blood flow using PPG. Expected price is around $1,000 (Rs 80,000–1 lakh) with up to seven days of battery life; validation studies of 23 and 60 participants reported correlations of 0.84–0.91, though the findings remain a preprint.

• PPG sensor at the temple tracks signals linked to cerebral blood flow
• Expected price around $1,000, or Rs 80,000–1 lakh in India
• Claimed battery life up to seven days, attached via adhesive Grips
• Correlations of 0.84–0.91 in studies of 23 and 60 participants