New Delhi, Jan. 5 -- An ex-AIIMS doctor has publicly criticised the experimental device worn by Deepinder Goyal, calling it scientifically unsound and cautioning people against spending money on what he described as a "fancy toy".

The criticism came after the Zomato CEO appeared on entrepreneur Raj Shamani's YouTube podcast wearing a small gold- or silver-coloured sensor attached to his temple. The unusual wearable quickly caught viewers' attention online.

Responding to discussions around the device, Dr Suvrankar Datta, an ex-AIIMS doctor and physician-scientist, strongly questioned its scientific credibility.

"As a physician-scientist and one of the earliest researchers in India in arterial stiffness and pulse wave velocity (2017), wh...