After badminton star PV Sindhu, cricketer Shubman Gill has been spotted wearing Temple, a forehead-mounted health tracker promoted by Zomato co-founder Deepinder Goyal. The AI-powered gadget claims to monitor cerebral blood flow, oxygenation and nervous system strain. Hyderabad: A few days ago it was badminton ace PV Sindhu and now star cricketer Shubman Gill was spotted wearing a sleek little device pasted right onto his forehead, when he stepped into the nets.