The authors measure the digital impact of the Indian COVID-19 lockdownusing an online survey coupled with consensually provided browser history records from over 1,000 individuals, spanning over 30million website visits. Browser histories provide the authors with rich and客观的历史时间使用信息;n that they collected withoutaccess to the extensive in-depth and in-person questioning, involving multiple time windows (e.g., past day/week/month), typicallyrequired for verification and validation in time-use surveys, whilealso avoiding the measurement problems of recall bias and misreporting in subjective reports.