Before revision:  We show here that the time evolution of the pandemic doubling time Td(t) is a reliable measure of the efficiency of the Lockdown, Case Finding, Mobile Tracing (LFT) policy using modern technologies versus the traditional Lockdown Stop and Go policy.
After revision:  We show here that the time evolution of the pandemic doubling time Td(t) is a reliable measure of the efficiency of the Lockdown, case Finding, mobile Tracing (LFT) policy using modern technologies versus the traditional Lockdown Stop and Go policy.