GWith Android smartphones and its apps, Google captures every step of every user. You can criticize that. Now the company wants to help with the movement data a little in the fight against the corona virus: They publish aggregated data to give the authorities an indication of whether the curfews are already in effect. The data is intended to show how the restrictions actually affected the individual countries.
On the page https://www.google.com/covid19/mobility/ you can see, for example, in the country report for Germany, currently still on March 29, that the number of visitors to restaurants, cafes, museums, Libraries and cinemas have dropped 77 percent since mid-February. In supermarkets, grocery stores and pharmacies, the decline is lower, at 51 percent. Google provides further analyzes on visiting parks, using public transport and visiting workplaces.
If you compare the figures for Germany with those for Sweden, you can see that there are fewer declines with a loose government guideline to combat the pandemic and that with the nice weather in March the Swedish parks were even more frequented than in February.
Rigid disease control in Italy shows a decline of 94 percent in restaurants, cafes, museums, libraries and cinemas and 90 percent in parks. Everyone can call up the mobility reports themselves; they show percentage increases or decreases in visits, not absolute numbers. The reports are currently published for 131 countries and are said to be helpful for the discussion of social distance measures.